Area Code 301
Washington DC area code 301 has been in service since 1947. It has 629 landlines and 132 wireless prefixes (exchanges) serviced by 39 carriers. It covers 17 counties, 958 ZIP codes, and 217 cities, including Silver Spring, Rockville, Frederick, Bethesda, Gaithersburg, Hyattsville, Hagerstown, Bowie, and Upper Marlboro.
- State:
- Washington DC
- Time Zone:
- Eastern (1:31 am)
Area Code (301) has 761 prefixes
| Prefix | County | City | Company/Carrier | Line Type |
|---|---|---|---|---|
| (301) 200- | Rankin | Pelahatchie | Unknown | Landline |
| (301) 203- | Prince Georges | Fort Washington | Verizon Maryland, Inc. | Landline |
| (301) 204- | Montgomery | Bethesda | Southwestern Bell Mobile Sy... | Cell Phone |
| (301) 205- | Anne Arundel | Beverley Beach | Verizon Maryland, Inc. | Landline |
| (301) 206- | Prince Georges | Laurel | Verizon Maryland, Inc. | Landline |
| (301) 207- | Howard | Savage | Arch Wireless Holdings, Inc. | Cell Phone |
| (301) 208- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 209- | Prince Georges | Avondale | Verizon Maryland, Inc. | Landline |
| (301) 210- | Prince Georges | Beltsville | Verizon Maryland, Inc. | Landline |
| (301) 212- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 213- | District Of Columbia | Washington | Sprint Spectrum L.p. | Cell Phone |
| (301) 214- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 215- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 216- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 217- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 218- | Prince Georges | Bowie | Verizon Maryland, Inc. | Landline |
| (301) 219- | Prince Georges | Fort Washington | Southwestern Bell Mobile Sy... | Cell Phone |
| (301) 220- | Prince Georges | Greenbelt | Verizon Maryland, Inc. | Landline |
| (301) 221- | Montgomery | Bethesda | Southwestern Bell Mobile Sy... | Cell Phone |
| (301) 222- | Montgomery | Bethesda | Cavalier Telephone Mid-atla... | Landline |
| (301) 223- | Washington | Williamsport | Verizon Maryland, Inc. | Landline |
| (301) 225- | Baltimore City | Baltimore | Geotek Communications, Inc. | Landline |
| (301) 226- | Prince Georges | Adelphi | Verizon Maryland, Inc. | Landline |
| (301) 227- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 228- | Frederick | Frederick | Verizon Maryland, Inc. | Landline |
| (301) 229- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 230- | Montgomery | North Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 231- | Montgomery | North Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 232- | Montgomery | Kensington | Mcimetro, Ats, Inc. | Landline |
| (301) 233- | Montgomery | North Bethesda | Cellco Partnership Dba Veri... | Cell Phone |
| (301) 234- | Prince Georges | Camp Springs | Verizon Maryland, Inc. | Landline |
| (301) 235- | Baltimore City | Baltimore | Mcimetro, Ats, Inc. | Landline |
| (301) 236- | Montgomery | Colesville | Verizon Maryland, Inc. | Landline |
| (301) 237- | Prince Georges | Bowie | Sprint Spectrum L.p. | Cell Phone |
| (301) 238- | Prince Georges | Camp Springs | Verizon Maryland, Inc. | Landline |
| (301) 239- | Allegany | Cresaptown | Verizon Maryland, Inc. | Landline |
| (301) 240- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 241- | Washington | Cascade | Verizon Maryland, Inc. | Landline |
| (301) 242- | Montgomery | Aspen Hill | Mcimetro, Ats, Inc. | Landline |
| (301) 243- | Frederick | Graceham | Verizon Maryland, Inc. | Landline |
| (301) 244- | Montgomery | Silver Spring | Telcove Operations, Inc. - Md | Landline |
| (301) 245- | Garrett | Grantsville | Verizon Maryland, Inc. | Landline |
| (301) 246- | Charles | Nanjemoy | Verizon Maryland, Inc. | Landline |
| (301) 247- | Anne Arundel | Laurel | Southwestern Bell Mobile Sy... | Cell Phone |
| (301) 248- | Prince Georges | Fort Washington | Verizon Maryland, Inc. | Landline |
| (301) 249- | Prince Georges | Bowie | Verizon Maryland, Inc. | Landline |
| (301) 250- | Montgomery | Darnestown | Mcimetro, Ats, Inc. | Landline |
| (301) 251- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 252- | Montgomery | Gaithersburg | Nextel Communications, Inc. | Cell Phone |
| (301) 253- | Montgomery | Damascus | Verizon Maryland, Inc. | Landline |
| (301) 254- | Montgomery | Silver Spring | Sprint Spectrum L.p. | Cell Phone |
| (301) 255- | Montgomery | North Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 256- | Anne Arundel | Crofton | Mcimetro, Ats, Inc. | Landline |
| (301) 257- | District Of Columbia | Washington | Sprint Spectrum L.p. | Cell Phone |
| (301) 258- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 259- | Charles | Newburg | Verizon Maryland, Inc. | Landline |
| (301) 260- | Montgomery | Olney | Verizon Maryland, Inc. | Landline |
| (301) 261- | Anne Arundel | Crofton | Verizon Maryland, Inc. | Landline |
| (301) 262- | Prince Georges | Bowie | Verizon Maryland, Inc. | Landline |
| (301) 263- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 264- | Allegany | Mount Savage | Verizon Maryland, Inc. | Landline |
| (301) 265- | Prince Georges | Fort Washington | Verizon Maryland, Inc. | Landline |
| (301) 266- | Charles | Saint Charles | Southwestern Bell Mobile Sy... | Cell Phone |
| (301) 267- | Howard | Savage | Arch Wireless Holdings, Inc. | Cell Phone |
| (301) 268- | Allegany | Cresaptown | Uscoc Of Cumberland, Inc. D... | Landline |
| (301) 270- | Montgomery | Silver Spring | Verizon Maryland, Inc. | Landline |
| (301) 271- | Frederick | Graceham | Verizon Maryland, Inc. | Landline |
| (301) 272- | Montgomery | Bethesda | Mcimetro, Ats, Inc. | Landline |
| (301) 273- | Montgomery | Silver Spring | Mcimetro, Ats, Inc. | Landline |
| (301) 274- | Charles | Hughesville | Verizon Maryland, Inc. | Landline |
| (301) 275- | District Of Columbia | Washington | Southwestern Bell Mobile Sy... | Cell Phone |
| (301) 276- | Prince Georges | Ardmore | Mcimetro, Ats, Inc. | Landline |
| (301) 277- | Prince Georges | Avondale | Verizon Maryland, Inc. | Landline |
| (301) 278- | Prince Georges | Camp Springs | Mcimetro, Ats, Inc. | Landline |
| (301) 279- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 280- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 281- | District Of Columbia | Washington | Mcimetro, Ats, Inc. | Landline |
| (301) 282- | Montgomery | Cloverly | Verizon Maryland, Inc. | Landline |
| (301) 283- | Prince Georges | Accokeek | Verizon Maryland, Inc. | Landline |
| (301) 284- | Montgomery | Bethesda | Mcimetro, Ats, Inc. | Landline |
| (301) 285- | Prince Georges | Capitol Heights | Verizon Maryland, Inc. | Landline |
| (301) 286- | Prince Georges | Greenbelt | Verizon Maryland, Inc. | Landline |
| (301) 287- | Montgomery | North Bethesda | Mcimetro, Ats, Inc. | Landline |
| (301) 288- | Montgomery | Cloverly | Mcimetro, Ats, Inc. | Landline |
| (301) 289- | Prince Georges | Beltsville | Mcimetro, Ats, Inc. | Landline |
| (301) 290- | Saint Marys | Mechanicsville | Verizon Maryland, Inc. | Landline |
| (301) 291- | Anne Arundel | Annapolis | Mcimetro, Ats, Inc. | Landline |
| (301) 292- | Prince Georges | Fort Washington | Verizon Maryland, Inc. | Landline |
| (301) 293- | Frederick | Myersville | Verizon Maryland, Inc. | Landline |
| (301) 294- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 295- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 296- | Montgomery | Rockville | Mci Worldcom Communications... | Landline |
| (301) 297- | Prince Georges | Clinton | Verizon Maryland, Inc. | Landline |
| (301) 298- | Montgomery | Bethesda | Mcimetro, Ats, Inc. | Landline |
| (301) 299- | Montgomery | Potomac | Verizon Maryland, Inc. | Landline |
| (301) 300- | Montgomery | Darnestown | Cellco Partnership Dba Veri... | Cell Phone |
| (301) 301- | Montgomery | Olney | Unknown | Landline |
| (301) 302- | Washington | Hagerstown | Nationsline, Inc.-md | Landline |
| (301) 304- | Frederick | Walkersville | Comcast Phone Of Northern M... | Landline |
| (301) 305- | Montgomery | Darnestown | Sprint Spectrum L.p. | Cell Phone |
