301 Area Code

Major City:Germantown

Timezone:Eastern

Current Time:

History of area code 301

301 is one of the original 86 area codes created by AT&T and the Bell System in 1947. It originally served the entire state of Maryland. In 1997, area code 240 was created and is currently an overlay to 301. To avoid exhausting all possible phone numbers in this area code, relief planning has begun.

Where is area code 301

Area code 301 is located in western Maryland and covers Germantown, Silver Spring, Waldorf, Frederick, and Rockville. It has a single overlay (240) that serves the same area.

What time zone is area code 301?

The 301 area code is located in the Eastern timezone. The Eastern time zone is also known as America/New_York

301 area code map

Top 11 Counties in Area Code 301

County	Total Population	% of 301	% of County
Montgomery, MD	971,777	11%	100%
Prince George's, MD	863,420	10%	100%
Frederick, MD	233,385	14%	96%
Washington, MD	147,430	10%	100%
Charles, MD	146,551	13%	100%
St. Mary's, MD	105,151	16%	100%
Allegany, MD	75,087	9%	100%
Howard, MD	287,085	1%	24%
Anne Arundel, MD	537,656	1%	7%
Garrett, MD	30,097	14%	100%
Calvert, MD	88,737	1%	8%

Top 50 Cities in Area Code 301

City	Total Population	% of 301	% of City
Germantown, MD	86,395	0%	100%
Silver Spring, MD	71,452	0%	100%
Waldorf, MD	67,752	1%	100%
Frederick, MD	65,239	0%	100%
Rockville, MD	61,209	0%	100%
Bethesda, MD	60,858	0%	100%
Gaithersburg, MD	59,933	0%	100%
Bowie, MD	54,727	0%	100%
Aspen Hill, MD	48,759	0%	100%
Wheaton, MD	48,284	0%	100%
Potomac, MD	44,965	1%	100%
North Bethesda, MD	43,828	0%	100%
Hagerstown, MD	39,662	0%	100%
Clinton, MD	35,970	1%	100%
Olney, MD	33,844	0%	100%
Chillum, MD	33,513	0%	100%
Montgomery Village, MD	32,032	0%	100%
College Park, MD	30,413	0%	100%
South Laurel, MD	26,112	0%	100%
Suitland, MD	25,825	0%	100%
Laurel, MD	25,115	0%	100%
North Potomac, MD	24,410	0%	100%
Scaggsville, MD	24,333	0%	100%
Fort Washington, MD	23,717	0%	100%
Fairland, MD	23,681	0%	100%
Landover, MD	23,078	0%	100%
Greenbelt, MD	23,068	0%	100%
Cumberland, MD	20,859	0%	100%
Camp Springs, MD	19,096	0%	100%
Langley Park, MD	18,755	0%	100%
Ballenger Creek, MD	18,274	0%	100%
Calverton, MD	17,724	0%	100%
Oxon Hill, MD	17,722	0%	100%
Hyattsville, MD	17,557	0%	100%
White Oak, MD	17,403	0%	100%
Seabrook, MD	17,287	0%	100%
Glassmanor, MD	17,295	0%	100%
Redland, MD	17,242	0%	100%
Beltsville, MD	16,772	0%	100%
Takoma Park, MD	16,715	0%	100%
Hillcrest Heights, MD	16,469	0%	100%
Maryland City, MD	16,093	0%	100%
East Riverdale, MD	15,509	0%	100%
Damascus, MD	15,257	0%	100%
Cloverly, MD	15,126	0%	100%
Adelphi, MD	15,086	0%	100%
Colesville, MD	14,647	0%	100%
Clarksburg, MD	13,766	0%	100%
Glenmont, MD	13,529	0%	100%
Glenn Dale, MD	13,466	0%	100%

Largest Landline Carriers in area code301

Prefixes	Carrier
58%	Verizon
3%	Teleport America
3%	Mci Worldcom
2%	Mcimetro Access Transmission Services
2%	Level 3
2%	Comcast Phone Of Northern
1%	AT&T Local
6%	Other

Largest Wireless Carriers in area code301

Prefixes	Carrier
6%	Verizon Wireless
5%	Cingular
4%	Sprint
3%	Verizon
2%	Usa Mobility Wireless
1%	Omnipoint Cap Operations
1%	United States Cel Md
1%	Other

Prefixes in area code301

Prefix	Usage	Primary City	Carrier	Introduced
(301) 200-	landline	Indian Head	Bandwidth.com	02/24/2011
(301) 202-	wireless	Chevy Chase	Cingular Wireless	12/19/2008
(301) 203-	landline	Fort Washington		02/04/1994
(301) 204-	wireless	Bethesda	Cingular Wireless	04/15/1996
(301) 205-	landline	Edgewater		07/06/1997
(301) 206-	landline	Laurel		02/04/1994
(301) 207-	wireless	Greenbelt	USA Mobility Wireless	02/04/1994
(301) 208-	landline	Gaithersburg		02/04/1994
(301) 209-	landline	Hyattsville		02/04/1994
(301) 210-	landline	Beltsville		02/04/1994
(301) 212-	landline	Gaithersburg		02/04/1994
(301) 213-	wireless	Beltsville	Sprint	07/06/1997
(301) 214-	landline	Rockville		02/04/1994
(301) 215-	landline	Chevy Chase		02/04/1994
(301) 216-	landline	Gaithersburg		02/04/1994
(301) 217-	landline	Rockville		02/04/1994
(301) 218-	landline	Bowie		01/10/1996
(301) 219-	wireless	Bethesda	Cingular Wireless	07/04/1995
(301) 220-	landline	Greenbelt		02/04/1994
(301) 221-	wireless	Bethesda	Cingular Wireless	09/11/1994
(301) 222-	landline	Bethesda	Cavalier Telephone Mid-atlantic	10/11/1997
(301) 223-	landline	Williamsport		02/04/1994
(301) 224-	wireless	Chevy Chase	USA Mobility Wireless	04/15/1996
(301) 225-	landline	Glenn Dale	Teleport Comms America	05/21/2009
(301) 226-	landline	Hyattsville		07/01/1996
(301) 227-	landline	Glen Echo		02/04/1994
(301) 228-	landline	Frederick		07/06/1997
(301) 229-	landline	Glen Echo		02/04/1994
(301) 230-	landline	Rockville		02/04/1994
(301) 231-	landline	Rockville		02/04/1994
(301) 232-	landline	Sandy Spring	Mci Worldcom Comms	01/11/1997
(301) 233-	wireless	Silver Spring	Verizon Wireless	04/01/1997
(301) 234-	landline	Fort Washington		01/11/1997
(301) 235-	landline	Clinton	MCI Metro ATS	01/11/1997
(301) 236-	landline	Silver Spring		02/04/1994
(301) 237-	wireless	Beltsville	Sprint	04/01/1997
(301) 238-	landline	Temple Hills		02/04/1994
(301) 239-	wireless	Hyattsville		02/11/1995
(301) 240-	landline	Gaithersburg		02/04/1994
(301) 241-	landline	Highfield		01/10/1996
(301) 242-	landline	Brandywine	MCI Metro ATS	01/11/1997
(301) 243-	landline	Bethesda		07/20/2006
(301) 244-	landline	Rockville	Telcove Operations	01/11/1997
(301) 245-	landline	Bittinger		02/04/1994
(301) 246-	landline	Nanjemoy		02/04/1994
(301) 247-	wireless	Leonardtown	Cingular Wireless	01/10/1996
(301) 248-	landline	Fort Washington		02/04/1994
(301) 249-	landline	Bowie		02/04/1994
(301) 250-	landline	Rockville	Mci Worldcom Comms	01/11/1997
(301) 251-	landline	Rockville		02/04/1994
(301) 252-	wireless	Gaithersburg	Sprint	01/10/1996
(301) 253-	landline	Damascus		02/04/1994
(301) 254-	wireless	Beltsville	Sprint	01/10/1996
(301) 255-	landline	Rockville		01/11/1997
(301) 256-	landline	Laurel	Mci Worldcom Comms	01/11/1997
(301) 257-	wireless	Beltsville	Sprint	10/11/1997
(301) 258-	landline	Gaithersburg		02/04/1994
(301) 259-	landline	Issue		02/04/1994
(301) 260-	landline	Ashton		07/06/1997
(301) 261-	landline	Glenn Dale		02/04/1994
(301) 262-	landline	Bowie		02/04/1994
(301) 263-	landline	Glen Echo		04/01/1997
(301) 264-	landline	Mount Savage		02/04/1994
(301) 265-	landline	Fort Washington		01/11/1997
(301) 266-	wireless	Waldorf	Cingular Wireless	01/11/1997
(301) 267-	wireless	Greenbelt	Sprint	10/04/2011
(301) 268-	wireless	Cumberland	Uscoc Of Cumberland DBA United States Cel Md	07/06/1997
(301) 270-	landline	Hyattsville		02/04/1994
(301) 271-	landline	Thurmont		02/04/1994
(301) 272-	landline	Rockville	Mci Worldcom Comms	01/11/1997
(301) 273-	landline	Silver Spring	Mci Worldcom Comms	01/11/1997
(301) 274-	landline	Hughesville		02/04/1994
(301) 275-	wireless	Bethesda	Cingular Wireless	02/11/1995
(301) 276-	landline	Hyattsville	Mci Worldcom Comms	01/11/1997
(301) 277-	landline	Hyattsville		02/04/1994
(301) 278-	landline	Mount Rainier	Mci Worldcom Comms	01/11/1997
(301) 279-	landline	Rockville		02/04/1994
(301) 280-	landline	Chevy Chase		10/11/1997
(301) 281-	landline	Oxon Hill	Mci Worldcom Comms	01/11/1997
(301) 282-	landline	Silver Spring		07/04/1995
(301) 283-	landline	Bryans Road		02/04/1994
(301) 284-	landline	Rockville	Mci Worldcom Comms	01/11/1997
(301) 285-	wireless	Silver Spring		07/04/1995
(301) 286-	landline	Greenbelt		02/04/1994
(301) 287-	landline	Rockville	Mci Worldcom Comms	01/11/1997
(301) 288-	landline	Rockville	Mci Worldcom Comms	01/10/1996
(301) 289-	landline	College Park	Mci Worldcom Comms	01/11/1997
(301) 290-	landline	Mechanicsville		07/06/1997
(301) 291-	landline	Mount Rainier	Mci Worldcom Comms	01/11/1997
(301) 292-	landline	Fort Washington		02/04/1994
(301) 293-	landline	Myersville		02/04/1994
(301) 294-	landline	Rockville		02/04/1994
(301) 295-	landline	Rockville		02/04/1994
(301) 296-	landline	Rockville	Mci Worldcom Comms	07/04/1995
(301) 297-	landline	Fort Washington		02/04/1994
(301) 298-	landline	Upper Marlboro	MCI Metro ATS	04/01/1997
(301) 299-	landline	Bethesda		02/04/1994
(301) 300-	wireless	Bethesda	Verizon Wireless	03/30/2007
(301) 302-	landline	Hagerstown	Sprint	10/05/2004
(301) 303-	wireless	Greenbelt	USA Mobility Wireless	02/04/1994
(301) 304-	landline	Frederick	Comcast Phone Of Northern Maryland	03/06/2007
(301) 305-	wireless	Frederick	Sprint	04/15/1996
(301) 306-	landline	Lanham		02/04/1994
(301) 307-	landline	College Park		07/01/1996
(301) 308-	wireless	Greenbelt	USA Mobility Wireless	02/04/1994
(301) 309-	landline	Rockville		02/04/1994
(301) 310-	landline	Columbia		07/01/1996
(301) 312-	wireless	Oxon Hill	Cingular Wireless	10/11/1997
(301) 313-	landline	Greenbelt		10/11/1997
(301) 314-	landline	Hyattsville	Paetec Comms	02/04/1994
(301) 315-	landline	Rockville		07/01/1996
(301) 316-	landline	Temple Hills		07/06/1997
(301) 317-	landline	Laurel		02/04/1994
(301) 318-	wireless	Bethesda	Cingular Wireless	02/04/1994
(301) 319-	landline	Rockville		07/01/1996
(301) 320-	landline	Glen Echo		02/04/1994
(301) 321-	landline	Rockville	Telcove Operations	07/06/1997
(301) 322-	landline	Hyattsville		02/04/1994
(301) 323-	landline	Laurel	Tw Telecom	07/06/1997
(301) 324-	landline	Capitol Heights		07/04/1995
(301) 325-	wireless	Silver Spring	Verizon Wireless	07/04/1995
(301) 326-	wireless	Silver Spring	Omnipoint Comms Cap Operations	10/11/1997
(301) 327-	landline	Upper Marlboro	Comcast Phone Of Northern Maryland	03/09/2006
(301) 328-	landline	Silver Spring	Comcast Phone Of Northern Maryland	06/21/2006
(301) 329-	wireless	Greenbelt	Cavalier Telephone Mid-atlantic	09/20/2011
(301) 330-	landline	Gaithersburg		02/04/1994
(301) 331-	wireless	Hagerstown	Cingular Wireless	02/04/1994
(301) 332-	wireless	Silver Spring	Cingular Wireless	10/15/1996
(301) 333-	landline	Capitol Heights		01/11/1997
(301) 334-	landline	Oakland		02/04/1994
(301) 335-	wireless	Bethesda	Cingular Wireless	09/11/1994
(301) 336-	landline	Capitol Heights		02/04/1994
(301) 337-	landline	Gaithersburg	Mci Worldcom Comms	07/04/1995
(301) 338-	landline	Cumberland	Idt America Corp	01/31/2006
(301) 339-	landline	Rockville	Cavalier Telephone Mid-atlantic	10/11/1997
(301) 340-	landline	Rockville		02/04/1994
(301) 341-	landline	Hyattsville		02/04/1994
(301) 342-	landline	Patuxent River		01/10/1996
(301) 343-	wireless	Capitol Heights	Sprint	02/11/1995
(301) 344-	landline	Greenbelt		02/04/1994
(301) 345-	landline	Greenbelt		02/04/1994
(301) 346-	wireless	Silver Spring	Cingular Wireless	10/11/1997
(301) 347-	landline	Chevy Chase		10/15/1996
(301) 348-	landline	Kensington	Mci Worldcom Comms	07/04/1995
(301) 349-	landline	Poolesville		02/04/1994
(301) 350-	landline	Capitol Heights		02/04/1994
(301) 351-	wireless	Silver Spring	Verizon Wireless	07/04/1995
(301) 352-	landline	Bowie		09/11/1994
(301) 353-	landline	Gaithersburg		02/04/1994
(301) 354-	landline	Rockville	Teleport Comms America	01/10/1996
(301) 355-	landline	Gaithersburg		12/08/2005
(301) 356-	landline	Laurel	Vdl DBA Global Telecom Brokers	08/17/2004
(301) 357-	wireless	Mount Rainier	Verizon Wireless	10/12/2006
(301) 358-	landline	Upper Marlboro	Level 3 Comms	10/11/1997
(301) 359-	landline	Westernport		01/10/1996
(301) 360-	landline	Frederick		01/25/1998
(301) 361-	landline	Laurel	Tw Telecom	10/11/1997
(301) 362-	landline	Laurel		10/11/1997
(301) 363-	landline	Damascus	Level 3 Comms	08/16/2006
(301) 364-	landline	Hyattsville	Mci Worldcom Comms	07/04/1995
(301) 365-	landline	Bethesda		02/04/1994
(301) 366-	wireless	Gaithersburg	Sprint	10/11/1997
(301) 367-	wireless	Silver Spring	Verizon Wireless	02/11/1995
(301) 368-	landline	Damascus		01/25/1998
(301) 369-	landline	Laurel		02/04/1994
(301) 370-	wireless	Gaithersburg	Sprint	05/18/1998
(301) 371-	landline	Middletown		02/04/1994
(301) 372-	landline	Brandywine		02/04/1994
(301) 373-	landline	Hollywood		02/04/1994
(301) 374-	landline	Waldorf		02/11/1995
(301) 375-	landline	Bryans Road		02/04/1994
(301) 376-	wireless	Laurel		04/01/1997
(301) 377-	landline	Laurel	Comcast Phone Of Northern Maryland	10/11/1997
(301) 378-	landline	Frederick	Comcast Phone Of Northern Maryland	02/20/2007
(301) 379-	wireless	Beltsville	Sprint	01/25/1998
(301) 380-	landline	Rockville		02/04/1994
(301) 382-	wireless	Rockville		10/15/1996
(301) 383-	landline	Glenn Dale	Comcast Phone Of Northern Maryland	10/11/1997
(301) 384-	landline	Silver Spring		02/04/1994
(301) 385-	wireless	Bethesda	Cingular Wireless	04/01/1997
(301) 386-	landline	Hyattsville		02/04/1994
(301) 387-	landline	Swanton		02/04/1994
(301) 388-	landline	Silver Spring		10/11/1997
(301) 389-	landline	Laurel	Tw Telecom	01/25/1998
(301) 390-	landline	Bowie		02/04/1994
(301) 391-	landline	Damascus		02/11/1995
(301) 392-	landline	La Plata		07/06/1997
(301) 393-	landline	Hagerstown		01/25/1998
(301) 394-	landline	Beltsville		02/04/1994
(301) 395-	wireless	Laurel	Verizon Wireless	08/17/2004
(301) 396-	landline	Waldorf		01/25/1998
(301) 397-	wireless	Greenbelt		02/11/1995
(301) 398-	landline	Rockville		10/09/2003
(301) 399-	wireless	Waldorf	Sprint	01/25/1998
(301) 400-	landline	Rockville		03/29/2010
(301) 401-	wireless	Frederick	Cingular Wireless	02/04/1994
(301) 402-	landline	Bethesda		02/04/1994
(301) 403-	landline	Hyattsville		02/04/1994
(301) 404-	wireless	Beltsville	Sprint	04/15/1996
(301) 405-	landline	Hyattsville	Paetec Comms	02/04/1994
(301) 406-	wireless	Chevy Chase	USA Mobility Wireless	02/04/1994
(301) 407-	landline	Poolesville		07/01/1996
(301) 408-	landline	Hyattsville		07/01/1996
(301) 409-	wireless	Greenbelt	USA Mobility Wireless	02/04/1994
(301) 412-	wireless	Bethesda	Cingular Wireless	02/04/1994
(301) 413-	landline	Rockville		02/04/1994
(301) 414-	landline	Damascus		02/04/1994
(301) 415-	landline	Silver Spring		02/04/1994
(301) 416-	landline	Williamsport		02/04/1994
(301) 417-	landline	Gaithersburg		02/04/1994
(301) 418-	landline	Frederick		11/20/2002
(301) 419-	landline	Beltsville		02/04/1994
(301) 420-	landline	Suitland		02/04/1994
(301) 421-	landline	Silver Spring		02/04/1994
(301) 422-	landline	Hyattsville		02/04/1994
(301) 423-	landline	Temple Hills		02/04/1994
(301) 424-	landline	Rockville		02/04/1994
(301) 425-	wireless	Beltsville		09/11/1994
(301) 426-	wireless	Beltsville		04/15/1996
(301) 427-	landline	Silver Spring		02/04/1994
(301) 428-	landline	Gaithersburg		02/04/1994
(301) 429-	landline	Lanham		01/11/1997
(301) 430-	landline	Bowie		10/11/1997
(301) 431-	landline	Hyattsville		02/04/1994
(301) 432-	landline	Keedysville		02/04/1994
(301) 433-	landline	Fort Washington		01/11/1997
(301) 434-	landline	Hyattsville		02/04/1994
(301) 435-	landline	Bethesda		07/04/1995
(301) 436-	landline	Hyattsville		02/04/1994
(301) 437-	wireless	Beltsville	Sprint	08/14/1998
(301) 438-	landline	Rockville		02/04/1994
(301) 439-	landline	Hyattsville		02/04/1994
(301) 440-	wireless	Capitol Heights	Sprint	05/18/1998
(301) 441-	landline	Greenbelt		02/04/1994
(301) 442-	wireless	Beltsville	Sprint	01/25/1998
(301) 443-	landline	Rockville		02/04/1994
(301) 444-	landline	Gaithersburg		01/25/1998
(301) 445-	landline	Hyattsville		02/04/1994
(301) 446-	landline	Greenbelt		08/14/1998
(301) 447-	landline	Emmitsburg		02/04/1994
(301) 448-	landline	Silver Spring	Comcast Phone Of Northern Maryland	08/20/2000
(301) 449-	landline	Fort Washington		02/04/1994
(301) 451-	landline	Bethesda		05/10/1999
(301) 452-	wireless	Silver Spring	Verizon Wireless	02/11/1995
(301) 453-	landline	Kitzmiller		02/04/1994
(301) 454-	landline	Hyattsville		02/04/1994
(301) 455-	wireless	Beltsville	Sprint	01/25/1998
(301) 456-	landline	Mount Rainier	Comcast Phone Of Northern Maryland	04/01/1997
(301) 457-	landline	Silver Spring		02/11/1995
(301) 458-	landline	Mount Rainier	Teleport Comms America	07/04/1995
(301) 459-	landline	Lanham		02/04/1994
(301) 460-	landline	Rockville		02/04/1994
(301) 461-	wireless	Rockville	Verizon Wireless	05/18/1998
(301) 462-	wireless	Myersville	Sprint	10/11/1997
(301) 463-	landline	Lonaconing		02/04/1994
(301) 464-	landline	Bowie		02/04/1994
(301) 465-	wireless	Myersville	Sprint	01/11/1997
(301) 466-	wireless	Silver Spring	Verizon Wireless	07/04/1995
(301) 467-	wireless	Silver Spring	Verizon Wireless	01/10/1996
(301) 468-	landline	Rockville		02/04/1994
(301) 469-	landline	Bethesda		02/04/1994
(301) 470-	landline	Laurel		02/04/1994
(301) 471-	wireless	Frederick	Verizon Wireless	04/15/1996
(301) 472-	landline	Mechanicsville		09/11/1994
(301) 473-	landline	Frederick		02/04/1994
(301) 474-	landline	Greenbelt		02/04/1994
(301) 475-	landline	Leonardtown		02/04/1994
(301) 476-	landline	Silver Spring		09/11/1994
(301) 477-	landline	College Park	Comcast Phone Of Northern Maryland	10/11/1997
(301) 478-	landline	Oldtown		02/04/1994
(301) 479-	landline	College Park	Mci Worldcom Comms	07/04/1995
(301) 480-	landline	Bethesda		02/04/1994
(301) 481-	wireless	Leonardtown	Verizon Wireless	04/15/1996
(301) 482-	landline	Damascus		04/15/1996
(301) 483-	landline	Laurel		04/15/1996
(301) 484-	landline	Oxon Hill	Comcast Phone Of Northern Maryland	04/01/1997
(301) 485-	landline	Oxon Hill	Comcast Phone Of Northern Maryland	04/01/1997
(301) 486-	landline	Greenbelt		01/11/1997
(301) 487-	landline	Myersville		02/04/1994
(301) 488-	wireless	Greenbelt		01/25/1998
(301) 489-	landline	Greenbelt		09/11/1994
(301) 490-	landline	Laurel		02/04/1994
(301) 491-	wireless	Hagerstown	Uscoc Of Cumberland DBA United States Cel Md	02/04/1994
(301) 492-	landline	Chevy Chase		02/04/1994
(301) 493-	landline	Rockville		02/04/1994
(301) 494-	landline	Upper Marlboro		10/15/1996
(301) 495-	landline	Silver Spring		02/04/1994
(301) 496-	landline	Bethesda		02/04/1994
(301) 497-	landline	Laurel		02/04/1994
(301) 498-	landline	Laurel		02/04/1994
(301) 499-	landline	Capitol Heights		02/04/1994
(301) 500-	landline	Chevy Chase	Xo Maryland	09/01/2010
(301) 501-	wireless	Oakland	Cingular Wireless	02/04/1994
(301) 502-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 503-	wireless	Bethesda	Cingular Wireless	02/04/1994
(301) 504-	landline	Silver Spring		02/04/1994
(301) 505-	landline	Temple Hills		02/04/1994
(301) 506-	wireless	Greenbelt	USA Mobility Wireless	02/04/1994
(301) 507-	landline	Greenbelt		02/04/1994
(301) 508-	wireless	Myersville	Cingular Wireless	05/18/1998
(301) 509-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 510-	wireless	Greenbelt	USA Mobility Wireless	02/04/1994
(301) 512-	wireless	Silver Spring	Verizon Wireless	01/10/1996
(301) 513-	landline	Greenbelt		02/04/1994
(301) 514-	wireless	Frederick	Verizon Wireless	07/01/1996
(301) 515-	landline	Gaithersburg		01/10/1996
(301) 516-	landline	Suitland		04/01/1997
(301) 517-	landline	Rockville		02/04/1994
(301) 518-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 519-	landline	Gaithersburg		04/01/1997
(301) 520-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 521-	landline	Oxon Hill		04/01/1997
(301) 522-	wireless	Rockville		04/01/1997
(301) 523-	wireless	Beltsville	Sprint	10/15/1996
(301) 524-	wireless	Frederick	Sprint	08/14/1998
(301) 525-	landline	Gaithersburg	Quantum Telecom	10/16/2003
(301) 526-	wireless	Silver Spring	Cingular Wireless	08/14/1998
(301) 527-	landline	Gaithersburg		02/11/1995
(301) 528-	landline	Gaithersburg		08/14/1998
(301) 529-	wireless	Rockville	Cingular Wireless	08/14/1998
(301) 530-	landline	Rockville		02/04/1994
(301) 531-	landline	Hyattsville	Starpower Comms	11/20/1998
(301) 533-	landline	Oakland		08/14/1998
(301) 534-	landline	Indian Head	Ymax Comms Corp.	11/15/2006
(301) 535-	wireless	Waldorf	Cingular Wireless	08/14/1998
(301) 536-	wireless	Leonardtown	Sprint	11/20/1998
(301) 537-	wireless	Beltsville	Sprint	08/14/1998
(301) 538-	wireless	Bethesda	Cingular Wireless	02/11/1995
(301) 539-	landline	La Plata	Teleport Comms America	08/14/1998
(301) 540-	landline	Gaithersburg		02/04/1994
(301) 541-	landline	Mount Rainier	Teleport Comms America	11/20/1998
(301) 542-	landline	Waldorf	Teleport Comms America	08/14/1998
(301) 543-	landline	Laurel	Teleport Comms America	10/11/1997
(301) 544-	wireless	Rockville		11/20/1998
(301) 545-	landline	Rockville		10/11/1997
(301) 546-	landline	Landover		04/07/2014
(301) 547-	landline	Mount Rainier	Teleport Comms America	01/10/1996
(301) 548-	landline	Gaithersburg		02/11/1995
(301) 549-	landline	Laurel		09/11/1994
(301) 551-	landline	Kensington	Baltimore-washington Telephone (bwt)	06/13/2000
(301) 552-	landline	Lanham		02/04/1994
(301) 553-	wireless	Waldorf	USA Mobility Wireless	05/18/1998
(301) 554-	wireless	Bethesda	USA Mobility Wireless	05/18/1998
(301) 556-	landline	Gaithersburg	Teleport Comms America	10/11/1997
(301) 557-	landline	Mount Rainier	Broadwing Comms.	09/06/2011
(301) 558-	wireless	College Park	USA Mobility Wireless	05/18/1998
(301) 559-	landline	Hyattsville		02/04/1994
(301) 560-	landline	Hyattsville	Paetec Comms	08/14/1998
(301) 561-	landline	Silver Spring	Baltimore-washington Telephone (bwt)	03/03/2001
(301) 562-	landline	Silver Spring		04/01/1997
(301) 563-	landline	Silver Spring		04/01/1997
(301) 564-	landline	Rockville		02/04/1994
(301) 565-	landline	Silver Spring		02/04/1994
(301) 566-	wireless	Beltsville		10/11/1997
(301) 567-	landline	Oxon Hill		02/04/1994
(301) 568-	landline	Suitland		02/04/1994
(301) 569-	wireless	Gaithersburg	Verizon Wireless	08/14/1998
(301) 570-	landline	Ashton		02/04/1994
(301) 571-	landline	Rockville		02/04/1994
(301) 572-	landline	Beltsville		02/04/1994
(301) 573-	wireless	Hagerstown	Sprint	11/20/1998
(301) 574-	landline	Upper Marlboro		02/11/1995
(301) 575-	landline	Laurel	Us Lec	08/14/1998
(301) 576-	landline	Silver Spring	Paetec Comms	08/14/1998
(301) 577-	landline	Lanham		02/04/1994
(301) 578-	landline	Silver Spring		10/15/1996
(301) 579-	landline	Brandywine		02/04/1994
(301) 580-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 581-	landline	Rockville		04/01/1997
(301) 582-	landline	Hagerstown		02/04/1994
(301) 583-	landline	Hyattsville		01/25/1998
(301) 584-	landline	Silver Spring	Baltimore-washington Telephone (bwt)	06/13/2000
(301) 585-	landline	Silver Spring		02/04/1994
(301) 586-	landline	Beltsville		01/10/1996
(301) 587-	landline	Silver Spring		02/04/1994
(301) 588-	landline	Silver Spring		02/04/1994
(301) 589-	landline	Silver Spring		02/04/1994
(301) 590-	landline	Gaithersburg		02/04/1994
(301) 591-	landline	Gaithersburg	Paetec Comms	08/14/1998
(301) 592-	landline	Silver Spring		10/11/1997
(301) 593-	landline	Silver Spring		02/04/1994
(301) 594-	landline	Bethesda		02/04/1994
(301) 595-	landline	Beltsville		02/04/1994
(301) 596-	landline	Columbia		02/04/1994
(301) 597-	landline	Hancock	New Frontiers Telecom	06/13/2000
(301) 598-	landline	Rockville		02/04/1994
(301) 599-	landline	Clinton		02/04/1994
(301) 600-	landline	Frederick		07/06/2006
(301) 601-	landline	Gaithersburg		02/04/1994
(301) 602-	wireless	Silver Spring	Verizon Wireless	04/15/1996
(301) 603-	landline	Rockville		07/01/1996
(301) 604-	landline	Laurel		02/04/1994
(301) 605-	landline	Rockville		10/15/1996
(301) 606-	wireless	Frederick	Verizon Wireless	02/04/1994
(301) 607-	landline	New Market		02/04/1994
(301) 608-	landline	Silver Spring		02/04/1994
(301) 609-	landline	La Plata		02/04/1994
(301) 610-	landline	Rockville		10/15/1996
(301) 612-	wireless	Sandy Spring	Teleport Comms America	10/11/2012
(301) 613-	wireless	Beltsville	Sprint	07/01/1996
(301) 614-	landline	Greenbelt		01/10/1996
(301) 615-	wireless	Greenbelt		02/04/1994
(301) 616-	wireless	Oakland	Uscoc Of Cumberland DBA United States Cel Md	02/04/1994
(301) 617-	landline	Laurel		02/11/1995
(301) 618-	landline	Hyattsville		02/04/1994
(301) 619-	landline	Frederick		02/04/1994
(301) 620-	landline	Frederick		02/04/1994
(301) 621-	landline	Glenn Dale		02/04/1994
(301) 622-	landline	Silver Spring		02/04/1994
(301) 623-	landline	Mount Rainier	Teleport Comms America	10/11/1997
(301) 624-	landline	Frederick		01/10/1996
(301) 625-	landline	Silver Spring		01/10/1996
(301) 626-	wireless	Silver Spring		05/18/1998
(301) 627-	landline	Upper Marlboro		02/04/1994
(301) 628-	landline	Mount Rainier	Teleport Comms America	01/10/1996
(301) 629-	wireless	Glenn Dale		02/04/1994
(301) 630-	landline	Temple Hills		02/04/1994
(301) 631-	landline	Frederick		02/11/1995
(301) 632-	landline	Waldorf		01/10/1996
(301) 633-	wireless	Bethesda	Cingular Wireless	02/11/1995
(301) 634-	landline	Mount Rainier	Teleport Comms America	10/11/1997
(301) 635-	landline	Myersville	New Frontiers Telecom	06/13/2000
(301) 636-	landline	Hyattsville		06/13/2000
(301) 637-	landline	Rockville	Level 3 Comms	08/14/1998
(301) 638-	landline	Waldorf		01/10/1996
(301) 639-	wireless	Frederick	Verizon Wireless	02/11/1995
(301) 640-	landline	Gaithersburg		02/04/1994
(301) 641-	wireless	Silver Spring	Verizon Wireless	09/11/1994
(301) 642-	wireless	Bethesda	Cingular Wireless	01/25/1998
(301) 643-	wireless	Waldorf	Verizon Wireless	09/11/1994
(301) 644-	landline	Frederick		08/14/1998
(301) 645-	landline	Waldorf		02/04/1994
(301) 646-	wireless	Bethesda	Cingular Wireless	01/10/1996
(301) 647-	wireless	Laurel		01/10/1996
(301) 648-	wireless	Bethesda	Cingular Wireless	02/04/1994
(301) 649-	landline	Silver Spring		02/04/1994
(301) 650-	landline	Silver Spring		02/04/1994
(301) 651-	wireless	Silver Spring	Verizon Wireless	02/11/1995
(301) 652-	landline	Chevy Chase		02/04/1994
(301) 653-	wireless	Waldorf	Cingular Wireless	01/10/1996
(301) 654-	landline	Chevy Chase		02/04/1994
(301) 655-	wireless	Bethesda	Cingular Wireless	04/15/1996
(301) 656-	landline	Chevy Chase		02/04/1994
(301) 657-	landline	Chevy Chase		02/04/1994
(301) 658-	landline	Sandy Spring	Teleport Comms America	10/11/1997
(301) 659-	wireless	Waldorf	Cingular Wireless	05/18/1998
(301) 660-	wireless	Keedysville	Cingular Wireless	03/19/2004
(301) 661-	wireless	Bethesda	Cingular Wireless	09/11/1994
(301) 662-	landline	Frederick		02/04/1994
(301) 663-	landline	Frederick		02/04/1994
(301) 664-	landline	Chevy Chase		01/10/1996
(301) 665-	landline	Hagerstown		01/10/1996
(301) 666-	landline	Glenn Dale	Teleport Comms America	08/14/1998
(301) 667-	wireless	Myersville	Cingular Wireless	09/11/1994
(301) 668-	landline	Frederick		08/14/1998
(301) 669-	landline	Suitland		09/11/1994
(301) 670-	landline	Gaithersburg		02/04/1994
(301) 671-	landline	Hagerstown	New Frontiers Telecom	06/13/2000
(301) 672-	wireless	Tall Timbers	Sprint	11/20/1998
(301) 673-	landline	Frederick	New Frontiers Telecom	06/13/2000
(301) 674-	wireless	Bethesda	Sprint	11/20/1998
(301) 675-	wireless	Silver Spring	Omnipoint Comms Cap Operations	06/13/2000
(301) 676-	wireless	Frederick	Cingular Wireless	07/06/1997
(301) 677-	landline	Glenn Dale	Teleport Comms America	02/04/1994
(301) 678-	landline	Hancock		02/04/1994
(301) 679-	landline	Mount Rainier	Teleport Comms America	08/14/1998
(301) 680-	landline	Silver Spring		02/04/1994
(301) 681-	landline	Silver Spring		02/04/1994
(301) 682-	landline	Frederick		02/11/1995
(301) 683-	landline	Mount Rainier	Teleport Comms America	08/14/1998
(301) 684-	landline	Indian Head	Teleport Comms America	08/14/1998
(301) 685-	landline	Damascus	Teleport Comms America	08/14/1998
(301) 686-	landline	Oxon Hill		05/10/1999
(301) 687-	landline	Frostburg		07/04/1995
(301) 688-	landline	Laurel		02/04/1994
(301) 689-	landline	Frostburg		02/04/1994
(301) 690-	landline	Leonardtown	Idt America Corp	05/23/2007
(301) 691-	landline	Poolesville	Teleport Comms America	08/14/1998
(301) 692-	landline	Mount Rainier	Teleport Comms America	08/14/1998
(301) 693-	wireless	Frederick	Omnipoint Comms Cap Operations	06/13/2000
(301) 694-	landline	Frederick		02/04/1994
(301) 695-	landline	Frederick		02/04/1994
(301) 696-	landline	Frederick		02/04/1994
(301) 697-	wireless	Cumberland	Cingular Wireless	02/04/1994
(301) 698-	landline	Frederick		02/04/1994
(301) 699-	landline	Hyattsville		02/04/1994
(301) 701-	wireless	Hyattsville		02/04/1994
(301) 702-	landline	Temple Hills		02/04/1994
(301) 703-	landline	Mount Airy	Level 3 Comms	08/29/2002
(301) 704-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 705-	landline	Waldorf		02/04/1994
(301) 706-	wireless	Silver Spring	Verizon Wireless	04/15/1996
(301) 707-	wireless	Cumberland	Uscoc Of Cumberland DBA United States Cel Md	02/04/1994
(301) 708-	wireless	Greenbelt	Cavalier Telephone Mid-atlantic	09/20/2011
(301) 709-	wireless	Greenbelt	USA Mobility Wireless	02/04/1994
(301) 710-	landline	Waldorf	Level 3 Comms	12/30/2005
(301) 712-	landline	Frederick	Mci Worldcom Comms	03/27/2005
(301) 713-	landline	Silver Spring		02/04/1994
(301) 714-	landline	Hagerstown		02/04/1994
(301) 715-	landline	Upper Marlboro	Teleport Comms America	08/14/1998
(301) 716-	wireless	Beltsville		07/01/1996
(301) 717-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 718-	landline	Chevy Chase		02/04/1994
(301) 719-	landline	Mount Rainier	Teleport Comms America	08/14/1998
(301) 720-	landline	Brandywine	Teleport Comms America	08/14/1998
(301) 721-	landline	Gaithersburg		10/15/1996
(301) 722-	landline	Cumberland		02/04/1994
(301) 723-	landline	Cumberland		05/18/1998
(301) 724-	landline	Cumberland		02/04/1994
(301) 725-	landline	Laurel		02/04/1994
(301) 727-	landline	Capitol Heights	Baltimore-washington Telephone (bwt)	06/13/2000
(301) 728-	wireless	Silver Spring	Omnipoint Comms Cap Operations	06/13/2000
(301) 729-	landline	Cumberland		02/04/1994
(301) 730-	wireless	Myersville	Cingular Wireless	11/20/1998
(301) 731-	landline	Lanham		02/04/1994
(301) 732-	wireless	Greenbelt	Metro PCS	10/04/2011
(301) 733-	landline	Hagerstown		02/04/1994
(301) 734-	landline	Silver Spring		02/11/1995
(301) 735-	landline	Suitland		02/04/1994
(301) 736-	landline	Suitland		02/04/1994
(301) 737-	landline	Lexington Park		02/04/1994
(301) 738-	landline	Rockville		02/04/1994
(301) 739-	landline	Hagerstown		02/04/1994
(301) 740-	landline	Gaithersburg		04/22/2004
(301) 741-	landline	Laurel	Level 3 Comms	08/14/1998
(301) 742-	wireless	Bethesda	Cingular Wireless	02/04/1994
(301) 743-	landline	Indian Head		02/04/1994
(301) 744-	landline	Indian Head		10/11/1997
(301) 745-	landline	Hagerstown		02/04/1994
(301) 746-	landline	Accident		02/04/1994
(301) 747-	landline	Mount Rainier	Teleport Comms America	11/20/1998
(301) 748-	wireless	Frederick	Sprint	04/01/1997
(301) 749-	landline	Oxon Hill		09/11/1994
(301) 750-	landline	Friendsville	Core Comms	03/18/2004
(301) 751-	wireless	Waldorf	Verizon Wireless	01/10/1996
(301) 752-	wireless	Waldorf	Verizon Wireless	08/14/1998
(301) 753-	landline	Oxon Hill		02/04/1994
(301) 754-	landline	Silver Spring		09/11/1994
(301) 755-	landline	Silver Spring	Mci Worldcom Comms	07/04/1995
(301) 756-	landline	Laurel	Tw Telecom	01/25/1998
(301) 757-	landline	Patuxent River		01/11/1997
(301) 758-	wireless	Silver Spring	Verizon Wireless	09/11/1994
(301) 759-	landline	Cumberland		02/04/1994
(301) 760-	landline	Bethesda	Level 3 Comms	02/27/2002
(301) 761-	landline	Kensington	Level 3 Comms	02/27/2002
(301) 762-	landline	Rockville		02/04/1994
(301) 763-	landline	Suitland		02/04/1994
(301) 764-	landline	Waldorf		01/10/1996
(301) 765-	landline	Bethesda		10/15/1996
(301) 766-	landline	Hagerstown		04/15/1996
(301) 767-	landline	Bethesda		10/15/1996
(301) 768-	landline	Cabin John	Level 3 Comms	02/27/2002
(301) 769-	landline	Avenue		02/04/1994
(301) 770-	landline	Rockville		02/04/1994
(301) 771-	wireless	Chevy Chase		04/01/1997
(301) 772-	landline	Hyattsville		02/04/1994
(301) 773-	landline	Hyattsville		02/04/1994
(301) 774-	landline	Ashton		02/04/1994
(301) 775-	wireless	Silver Spring	Verizon Wireless	01/10/1996
(301) 776-	landline	Laurel		02/04/1994
(301) 777-	landline	Cumberland		02/04/1994
(301) 778-	landline	Capitol Heights	Mci Worldcom Comms	07/04/1995
(301) 779-	landline	Hyattsville		02/04/1994
(301) 780-	landline	Upper Marlboro		01/25/1998
(301) 781-	landline	Frostburg	New Frontiers Telecom	06/13/2000
(301) 782-	landline	Brandywine		02/04/1994
(301) 783-	landline	Cumberland	New Frontiers Telecom	06/13/2000
(301) 784-	landline	Cumberland		09/11/1994
(301) 785-	wireless	Silver Spring	Verizon Wireless	08/14/1998
(301) 786-	landline	Mccoole		01/10/1996
(301) 787-	wireless	Silver Spring	Verizon Wireless	08/14/1998
(301) 788-	wireless	Frederick	Verizon Wireless	08/14/1998
(301) 789-	landline	Hyattsville	Core Comms	08/13/2002
(301) 790-	landline	Hagerstown		02/04/1994
(301) 791-	landline	Hagerstown		02/04/1994
(301) 792-	wireless	Silver Spring	Omnipoint Comms Cap Operations	06/13/2000
(301) 793-	wireless	Silver Spring	Omnipoint Comms Cap Operations	06/13/2000
(301) 794-	landline	Lanham		02/04/1994
(301) 795-	landline	Hyattsville	MCI Metro ATS	11/20/1998
(301) 796-	landline	College Park		06/30/2003
(301) 797-	landline	Hagerstown		02/04/1994
(301) 798-	landline	New Market		07/01/1996
(301) 799-	landline	Keedysville	Core Comms	03/18/2004
(301) 800-	wireless	Hagerstown	Virginia PCS Alliance, L.c.	04/29/2010
(301) 801-	wireless	Silver Spring	Verizon Wireless	04/15/1996
(301) 802-	wireless	Silver Spring	Verizon Wireless	10/15/1996
(301) 803-	landline	Rockville		02/04/1994
(301) 804-	landline	Sandy Spring	MCI Metro ATS	11/20/1998
(301) 805-	landline	Bowie		02/04/1994
(301) 806-	wireless	Beltsville	Sprint	07/01/1996
(301) 807-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 808-	landline	Capitol Heights		02/04/1994
(301) 809-	landline	Bowie		02/04/1994
(301) 810-	landline	Monrovia	AT&T Local	08/14/1998
(301) 812-	landline	North Beach		07/01/1996
(301) 813-	landline	Bethesda	Baltimore-washington Telephone (bwt)	06/30/2001
(301) 814-	wireless	Bethesda	Cingular Wireless	02/04/1994
(301) 815-	landline	Frederick		02/04/1994
(301) 816-	landline	Rockville		02/04/1994
(301) 817-	landline	Suitland		02/04/1994
(301) 818-	landline	Waldorf		02/04/1994
(301) 819-	wireless	Silver Spring		07/01/1996
(301) 820-	landline	Gaithersburg	AT&T Local	11/20/1998
(301) 821-	landline	Laurel	AT&T Local	08/14/1998
(301) 822-	landline	Mount Rainier	AT&T Local	08/14/1998
(301) 823-	landline	Mount Rainier	AT&T Local	08/14/1998
(301) 824-	landline	Smithsburg		02/04/1994
(301) 825-	landline	Rockville	AT&T Local	08/14/1998
(301) 826-	landline	Lexington Park		02/04/1994
(301) 827-	landline	Bethesda		02/04/1994
(301) 828-	landline	Bethesda	AT&T Local	08/14/1998
(301) 829-	landline	Mount Airy		02/04/1994
(301) 830-	landline	Silver Spring	AT&T Local	08/14/1998
(301) 831-	landline	Adamstown		02/04/1994
(301) 832-	landline	Mount Rainier	AT&T Local	08/14/1998
(301) 833-	landline	Glenn Dale	Teleport Comms America	11/11/2003
(301) 834-	landline	Brunswick		02/04/1994
(301) 836-	landline	Temple Hills		07/04/1995
(301) 837-	landline	Hyattsville	MCI Metro ATS	11/20/1998
(301) 838-	landline	Rockville		07/04/1995
(301) 839-	landline	Oxon Hill		02/04/1994
(301) 840-	landline	Gaithersburg		02/04/1994
(301) 841-	landline	Hyattsville	MCI Metro ATS	11/20/1998
(301) 842-	landline	Clear Spring		02/04/1994
(301) 843-	landline	Waldorf		02/04/1994
(301) 844-	wireless	Mount Rainier	Sprint	10/04/2011
(301) 845-	landline	Walkersville		02/04/1994
(301) 846-	landline	Frederick		02/04/1994
(301) 847-	landline	Beltsville		02/04/1994
(301) 848-	wireless	Waldorf	Verizon Wireless	08/14/1998
(301) 849-	landline	Oakland	New Frontiers Telecom	06/13/2000
(301) 850-	landline	Glenn Dale	Level 3 Comms	08/04/2002
(301) 851-	landline	Hyattsville		02/04/1994
(301) 852-	landline	Hyattsville		02/04/1994
(301) 853-	landline	Hyattsville		02/04/1994
(301) 854-	landline	Columbia		02/04/1994
(301) 855-	landline	Upper Marlboro		02/04/1994
(301) 856-	landline	Clinton		02/04/1994
(301) 857-	landline	Clear Spring	Core Comms	07/12/2002
(301) 858-	landline	Glenn Dale		02/04/1994
(301) 859-	landline	Oxon Hill	Level 3 Comms	01/09/2002
(301) 860-	landline	Bowie		08/20/2000
(301) 861-	landline	Waldorf	Level 3 Comms	08/14/1998
(301) 862-	landline	Lexington Park		02/04/1994
(301) 863-	landline	Lexington Park		02/04/1994
(301) 864-	landline	Hyattsville		02/04/1994
(301) 865-	landline	New Market		02/04/1994
(301) 866-	landline	Lexington Park		10/15/1996
(301) 867-	landline	Hyattsville	MCI Metro ATS	11/20/1998
(301) 868-	landline	Clinton		02/04/1994
(301) 869-	landline	Gaithersburg		02/04/1994
(301) 870-	landline	Waldorf		02/04/1994
(301) 871-	landline	Rockville		02/04/1994
(301) 872-	landline	Ridge		02/04/1994
(301) 873-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 874-	landline	Adamstown		02/04/1994
(301) 875-	landline	Laurel	Verizon Wireless	03/27/2005
(301) 876-	landline	Cumberland	Level 3 Comms	05/02/2002
(301) 877-	landline	Clinton		01/11/1997
(301) 878-	landline	Baltimore		01/10/1996
(301) 879-	landline	Silver Spring		02/11/1995
(301) 880-	landline	Tall Timbers	Level 3 Comms	08/14/1998
(301) 881-	landline	Rockville		02/04/1994
(301) 882-	landline	New Market	Core Comms	03/18/2004
(301) 883-	landline	Hyattsville		09/11/1994
(301) 884-	landline	Mechanicsville		02/04/1994
(301) 885-	landline	Waldorf		02/11/1995
(301) 886-	landline	Laurel		07/04/1995
(301) 887-	landline	Hyattsville		02/11/1995
(301) 888-	landline	Brandywine		02/04/1994
(301) 889-	landline	Glenn Dale		01/10/1996
(301) 890-	landline	Beltsville		02/04/1994
(301) 891-	landline	Hyattsville		02/04/1994
(301) 892-	landline	Hyattsville		03/11/2005
(301) 893-	landline	Waldorf		01/10/1996
(301) 894-	landline	Temple Hills		02/04/1994
(301) 895-	landline	Grantsville		02/04/1994
(301) 896-	landline	Rockville		01/10/1996
(301) 897-	landline	Rockville		02/04/1994
(301) 898-	landline	Walkersville		02/04/1994
(301) 899-	landline	Temple Hills		02/04/1994
(301) 900-	landline	Frederick		10/22/2013
(301) 901-	landline	Greenbelt		02/04/1994
(301) 902-	landline	Beltsville		02/04/1994
(301) 903-	landline	Gaithersburg		02/04/1994
(301) 904-	wireless	Leonardtown	Verizon Wireless	02/04/1994
(301) 905-	landline	Silver Spring		02/04/1994
(301) 906-	wireless	Bethesda	Cingular Wireless	10/15/1996
(301) 907-	landline	Chevy Chase		05/18/1998
(301) 908-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 909-	landline	Hyattsville	MCI Metro ATS	11/20/1998
(301) 910-	wireless	Bethesda	Cingular Wireless	02/04/1994
(301) 912-	landline	Odenton		02/04/1994
(301) 913-	landline	Chevy Chase		02/04/1994
(301) 914-	landline	Mc Henry	Mountain Comms DBA Procom	12/27/2012
(301) 915-	landline	Bethesda	Starpower Comms	11/20/1998
(301) 916-	landline	Poolesville		02/04/1994
(301) 917-	landline	Rockville	Starpower Comms	08/14/1998
(301) 918-	landline	Lanham		02/04/1994
(301) 919-	wireless	Bethesda	Cingular Wireless	02/04/1994
(301) 920-	landline	Silver Spring	Starpower Comms	08/14/1998
(301) 921-	landline	Gaithersburg		02/04/1994
(301) 922-	wireless	Silver Spring	Verizon Wireless	04/15/1996
(301) 923-	wireless	Hyattsville		09/11/1994
(301) 924-	landline	Ashton		02/04/1994
(301) 925-	landline	Hyattsville		02/04/1994
(301) 926-	landline	Gaithersburg		02/04/1994
(301) 927-	landline	Hyattsville		02/04/1994
(301) 928-	wireless	Silver Spring	Verizon Wireless	02/11/1995
(301) 929-	landline	Kensington		02/04/1994
(301) 930-	wireless	Silver Spring		02/04/1994
(301) 931-	landline	Beltsville		07/04/1995
(301) 932-	landline	La Plata		02/04/1994
(301) 933-	landline	Kensington		02/04/1994
(301) 934-	landline	La Plata		02/04/1994
(301) 935-	landline	Hyattsville		02/04/1994
(301) 937-	landline	Beltsville		02/04/1994
(301) 938-	wireless	Silver Spring	Verizon Wireless	04/15/1996
(301) 939-	landline	Laurel		04/15/1996
(301) 940-	wireless	Silver Spring		02/04/1994
(301) 941-	landline	Chevy Chase		02/11/1995
(301) 942-	landline	Kensington		02/04/1994
(301) 943-	wireless	Silver Spring	Verizon Wireless	04/15/1996
(301) 944-	landline	Gaithersburg	MCI Metro ATS	11/20/1998
(301) 945-	landline	Hyattsville	MCI Metro ATS	11/20/1998
(301) 946-	landline	Kensington		02/04/1994
(301) 947-	landline	Gaithersburg		04/15/1996
(301) 948-	landline	Gaithersburg		02/04/1994
(301) 949-	landline	Kensington		02/04/1994
(301) 951-	landline	Chevy Chase		02/04/1994
(301) 952-	landline	Upper Marlboro		02/04/1994
(301) 953-	landline	Laurel		02/04/1994
(301) 955-	landline	Hyattsville	MCI Metro ATS	11/20/1998
(301) 956-	landline	Rockville		05/22/2002
(301) 957-	landline	Laurel	MCI Metro ATS	11/20/1998
(301) 960-	landline	Silver Spring	MCI Metro ATS	11/20/1998
(301) 961-	landline	Chevy Chase		02/04/1994
(301) 962-	landline	Kensington		01/11/1997
(301) 963-	landline	Gaithersburg		02/04/1994
(301) 964-	wireless	Myersville	Cingular Wireless	04/15/1996
(301) 965-	landline	Hyattsville	MCI Metro ATS	11/20/1998
(301) 966-	landline	Hyattsville	MCI Metro ATS	11/20/1998
(301) 967-	landline	Suitland		02/04/1994
(301) 968-	landline	Bethesda	Mci Worldcom Comms	07/04/1995
(301) 969-	landline	Brunswick	Comcast Phone Of Northern Maryland	03/06/2007
(301) 970-	landline	Annapolis		02/04/1994
(301) 971-	landline	Oxon Hill	Starpower Comms	11/20/1998
(301) 972-	landline	Gaithersburg		02/04/1994
(301) 973-	landline	Glenn Dale		02/04/1994
(301) 974-	landline	Laurel	Starpower Comms	11/20/1998
(301) 975-	landline	Gaithersburg		02/04/1994
(301) 976-	wireless		Baltimore-washington Telephone (bwt)	10/17/2005
(301) 977-	landline	Gaithersburg		02/04/1994
(301) 978-	landline	Gaithersburg		10/11/1997
(301) 979-	landline	Gaithersburg		04/15/1996
(301) 980-	wireless	Silver Spring	Verizon Wireless	02/04/1994
(301) 981-	landline	Mount Rainier	Tw Telecom	02/04/1994
(301) 982-	landline	Greenbelt		02/04/1994
(301) 983-	landline	Bethesda		02/04/1994
(301) 984-	landline	Rockville		02/04/1994
(301) 985-	landline	Hyattsville		02/04/1994
(301) 986-	landline	Chevy Chase		02/04/1994
(301) 987-	landline	Gaithersburg		10/11/1997
(301) 988-	wireless	Hagerstown	Uscoc Of Cumberland DBA United States Cel Md	07/06/1997
(301) 989-	landline	Silver Spring		02/04/1994
(301) 990-	landline	Gaithersburg		02/04/1994
(301) 991-	wireless	Hagerstown	Sprint	04/15/1996
(301) 992-	wireless	Hagerstown	Sprint	10/11/1997
(301) 993-	wireless	Greenbelt		11/20/1998
(301) 994-	landline	Valley Lee		02/04/1994
(301) 995-	landline	Patuxent River		08/14/1998
(301) 996-	wireless	Beltsville	Sprint	01/10/1996
(301) 997-	landline	Leonardtown		01/25/1998
(301) 998-	landline	Rockville		01/10/1996