Area code 301 covers part of Marylandstate, covering most of Montgomery, Prince George's, Charles, Frederick, Washington counties. It was started on Jan 01, 2000. This region follows US/Eastern + Daylight Savings timezone. Other popular area codes that belong to Maryland state include 240, 410, 443, 667.
Date Changed | Change Details |
Jun 01, 2014 | Area code 301-278 was introduced on May 20, 2013 and subscribers are operational from Jun 01, 2014. |
May 04, 2014 | Area code 301-250 will be de-activated on May 04, 2014 for all subscribers. |
Mar 21, 2014 | Area code 301-259 was introduced on Sep 24, 2007 and subscribers are operational from Mar 21, 2014. |
Mar 21, 2014 | Area code 301-288 was introduced on Mar 25, 2011 and subscribers are operational from Mar 21, 2014. |
Oct 11, 2013 | Area code 301-283 was introduced on Sep 12, 2013 and subscribers are operational from Oct 11, 2013. |
Sep 18, 2013 | Area code 301-207 subscribers are operational from Sep 18, 2013. |
Area Code | City | County | Population | Network Operator |
301-200-4 | Mc Lean | Charles | 146,551 | Level 3 Communications LLC - MD |
301-200-0 | Washington | Charles | 146,551 | Bandwidth.com CLEC LLC - MD |
301-200-3 | Washington | Charles | 146,551 | MCImetro Access Transmission Services LLC |
301-202-0 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
301-202-3 | Mc Lean | Montgomery | 971,777 | US LEC of Maryland Inc |
301-202-4 | Washington | Montgomery | 971,777 | Bandwidth.com CLEC LLC - MD |
301-202-9 | Washington | Montgomery | 971,777 | YMax Communications Corporation - MD |
301-203 | Fort Washington | Prince George's | 863,420 | Verizon Maryland Inc |
301-204-0 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
301-204-8 | Chevy Chase | Montgomery | 971,777 | Verizon Maryland Inc |
301-205-5 | Hanover | Howard | 287,085 | Cavalier Telephone Mid-Atlantic LLC - MD |
301-205-0 | Mayo | Howard | 287,085 | Verizon Maryland Inc |
301-206 | Laurel | Prince George's | 863,420 | Verizon Maryland Inc |
301-207 | Greenbelt | Prince George's | 863,420 | USA Mobility Wireless Inc |
301-208 | Gaithersburg | Montgomery | 971,777 | Verizon Maryland Inc |
301-209 | Hyattsville | Prince George's | 863,420 | Verizon Maryland Inc |
301-210 | Beltsville | Prince George's | 863,420 | Verizon Maryland Inc |
301-211 | 298,213 | Community Support And Referral Services | ||
301-212-0 | Beltsville | Montgomery | 971,777 | MetroPCS Inc |
301-212-0 | Gaithersburg | Montgomery | 971,777 | Verizon Maryland Inc |
301-213 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
301-214 | Bethesda | Montgomery | 971,777 | Verizon Maryland Inc |
301-215 | Chevy Chase | Montgomery | 971,777 | Verizon Maryland Inc |
301-216 | Gaithersburg | Montgomery | 971,777 | Verizon Maryland Inc |
301-217 | Rockville | Montgomery | 971,777 | Verizon Maryland Inc |
301-218 | Upper Marlboro | Prince George's | 863,420 | Verizon Maryland Inc |
301-219 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
301-220 | Berwyn Heights | Prince George's | 863,420 | Verizon Maryland Inc |
301-221 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
301-222-7 | Beltsville | Montgomery | 971,777 | Omnipoint Communications Cap Operations LLC |
301-222-0 | Herndon | Montgomery | 971,777 | Cavalier Telephone Mid-Atlantic LLC - MD |
301-223-3 | Mount Airy | Washington | 147,430 | Core Communications Inc - MD |
301-223-0 | Williamsport | Washington | 147,430 | Verizon Maryland Inc |
301-224 | Chevy Chase | Montgomery | 971,777 | USA Mobility Wireless Inc |
301-225-0 | Washington | Prince George's | 863,420 | Teleport Communications America LLC - DC |
301-226 | Landover | Prince George's | 863,420 | Verizon Maryland Inc |
301-227 | Bethesda | Montgomery | 971,777 | Verizon Maryland Inc |
301-228 | Frederick | Frederick | 233,385 | Verizon Maryland Inc |
301-229 | Bethesda | Montgomery | 971,777 | Verizon Maryland Inc |
301-230 | Rockville | Montgomery | 971,777 | Verizon Maryland Inc |
301-231 | Rockville | Montgomery | 971,777 | Verizon Maryland Inc |
301-232-5 | Chevy Chase | Montgomery | 971,777 | Paetec Communications Inc - MD |
301-232-0 | Damascus | Montgomery | 971,777 | Core Communications Inc - MD |
301-232-1 | Mc Lean | Montgomery | 971,777 | US LEC of Maryland Inc |
301-232-0 | Rockville | Montgomery | 971,777 | MCImetro Access Transmission Services LLC |
301-233 | Annapolis Junction | Montgomery | 971,777 | Cellco Partnership dba Verizon Wireless - MD |
301-234-0 | Fort Washington | Prince George's | 863,420 | Verizon Maryland Inc |
301-234-6 | Mc Lean | Prince George's | 863,420 | Level 3 Communications LLC - MD |
301-234-2 | Washington | Prince George's | 863,420 | AT&T Local |
301-235-0 | Damascus | Prince George's | 863,420 | Core Communications Inc - MD |
301-235-0 | Washington | Prince George's | 863,420 | MCImetro Access Transmission Services LLC |
301-236 | Silver Spring | Montgomery | 971,777 | Verizon Maryland Inc |
301-237 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
301-238-5 | Chevy Chase | Prince George's | 863,420 | Paetec Communications Inc - MD |
301-238-0 | Temple Hills | Prince George's | 863,420 | Verizon Maryland Inc |
301-239 | Hyattsville | Prince George's | 863,420 | Verizon Maryland Inc |
301-240 | Gaithersburg | Montgomery | 971,777 | Verizon Maryland Inc |
301-241-2 | Frederick | Washington | 147,430 | Comcast Phone of Northern Maryland Inc - MD |
301-241-0 | Hagerstown | Washington | 147,430 | Bandwidth.com CLEC LLC - MD |
301-241-0 | Highfield | Washington | 147,430 | Verizon Maryland Inc |
301-241-7 | Martinsburg | Washington | 147,430 | Sprint Communications Company LP - MD |
301-242-0 | Damascus | Prince George's | 863,420 | Core Communications Inc - MD |
301-242-5 | Mc Lean | Prince George's | 863,420 | US LEC of Maryland Inc |
301-242-0 | Washington | Prince George's | 863,420 | MCImetro Access Transmission Services LLC |
301-243-0 | Bethesda | Montgomery | 971,777 | Verizon Maryland Inc |
301-244-5 | Alexandria | Montgomery | 971,777 | Comcast Phone of Northern Maryland Inc - MD |
301-244-7 | Chevy Chase | Montgomery | 971,777 | Paetec Communications Inc - MD |
301-244-0 | Chevy Chase | Montgomery | 971,777 | TelCove Operations Inc - MD |
301-244-2 | Damascus | Montgomery | 971,777 | Core Communications Inc - MD |
301-244-3 | Herndon | Montgomery | 971,777 | Broadview Networks Inc - DC |
301-244-9 | Washington | Montgomery | 971,777 | Bandwidth.com CLEC LLC - MD |
301-244-0 | Washington | Montgomery | 971,777 | XO Maryland LLC |
301-245-0 | Bittinger | Garrett | 30,097 | Verizon Maryland Inc |
301-245-3 | Hagerstown | Garrett | 30,097 | Bandwidth.com CLEC LLC - MD |
301-245-0 | Mount Airy | Garrett | 30,097 | Core Communications Inc - MD |
301-246-1 | Damascus | Charles | 146,551 | Core Communications Inc - MD |
301-246-0 | Nanjemoy | Charles | 146,551 | Verizon Maryland Inc |
301-246-3 | Washington | Charles | 146,551 | Bandwidth.com CLEC LLC - MD |
301-247 | Beltsville | St. Mary's | 105,151 | New Cingular Wireless PCS LLC - DC |
301-248 | Fort Washington | Prince George's | 863,420 | Verizon Maryland Inc |
301-249 | Upper Marlboro | Prince George's | 863,420 | Verizon Maryland Inc |
301-250-3 | Annapolis Junction | Montgomery | 971,777 | Cellco Partnership dba Verizon Wireless - MD |
301-250-8 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
301-250-2 | Reston | Montgomery | 971,777 | MCI Worldcom Communications Inc - MD |
301-250-0 | Rockville | Montgomery | 971,777 | MCImetro Access Transmission Services LLC |
301-250-1 | Washington | Montgomery | 971,777 | Broadvox - CLEC LLC - DC |
301-250-7 | Washington | Montgomery | 971,777 | XO Maryland LLC |
301-251 | Rockville | Montgomery | 971,777 | Verizon Maryland Inc |
301-252 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
301-253 | Damascus | Montgomery | 971,777 | Verizon Maryland Inc |
301-254 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
301-255-0 | Rockville | Montgomery | 971,777 | Verizon Maryland Inc |
301-256-8 | Beltsville | Prince George's | 863,420 | Omnipoint Communications Cap Operations LLC |
301-256-0 | Mc Lean | Prince George's | 863,420 | Level 3 Communications LLC - MD |
301-256-0 | Rockville | Prince George's | 863,420 | MCImetro Access Transmission Services LLC |
301-256-6 | Station Hills | Prince George's | 863,420 | Leap Wireless International Inc dba Cricket Communications Inc |
301-257 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
301-258 | Gaithersburg | Montgomery | 971,777 | Verizon Maryland Inc |
301-259-0 | Newburg | Charles | 146,551 | Verizon Maryland Inc |
301-259-5 | Washington | Charles | 146,551 | Bandwidth.com CLEC LLC - MD |
301-259-3 | Washington | Charles | 146,551 | Broadvox - CLEC LLC - DC |
301-260-4 | Laurel | Montgomery | 971,777 | tw telecom of maryland - MD |
301-261 | Annapolis | Howard | 287,085 | Verizon Maryland Inc |
301-261 | Mayo | Howard | 287,085 | Verizon Maryland Inc |
301-262 | Bowie | Prince George's | 863,420 | Verizon Maryland Inc |
301-263-4 | Beltsville | Montgomery | 971,777 | Omnipoint Communications Cap Operations LLC |
301-263-8 | Laurel | Montgomery | 971,777 | VDL Inc dba Global Telecom Brokers - MD |
301-264-2 | Cumberland | Allegany | 75,087 | IDT America Corporation - MD |
301-264-1 | Mount Airy | Allegany | 75,087 | Core Communications Inc - MD |
301-265-0 | Fort Washington | Prince George's | 863,420 | Verizon Maryland Inc |
301-266 | Beltsville | Charles | 146,551 | New Cingular Wireless PCS LLC - DC |
301-267-0 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
301-268 | Cumberland | Allegany | 75,087 | USCOC of Cumberland Inc dba United States Cellular - MD |
301-269 | Damascus | Montgomery | 971,777 | USA Mobility Wireless Inc |
301-270 | Hyattsville | Montgomery | 971,777 | Verizon Maryland Inc |
301-271-8 | Mount Airy | Frederick | 233,385 | Core Communications Inc - MD |
301-272-7 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
301-272-4 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
301-273-3 | Alexandria | Montgomery | 971,777 | Comcast Phone of Northern Maryland Inc - MD |
301-273-0 | Rockville | Montgomery | 971,777 | MCImetro Access Transmission Services LLC |
301-274-8 | Herndon | Charles | 146,551 | ATX Telecommunications Services Ltd |
301-274-7 | Washington | Charles | 146,551 | Cavalier East LLC - MD |
301-275 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
301-276-1 | Adelphi | Prince George's | 863,420 | Cellco Partnership dba Verizon Wireless - MD |
301-276-7 | Washington | Prince George's | 863,420 | Bandwidth.com CLEC LLC - MD |
301-277 | Hyattsville | Prince George's | 863,420 | Verizon Maryland Inc |
301-278-6 | Adelphi | Prince George's | 863,420 | Cellco Partnership dba Verizon Wireless - MD |
301-278-0 | Laurel | Prince George's | 863,420 | Quantum Telecommunications Inc - MD |
301-278-8 | Washington | Prince George's | 863,420 | Bandwidth.com CLEC LLC - MD |
301-279 | Rockville | Montgomery | 971,777 | Verizon Maryland Inc |
301-280 | Chevy Chase | Montgomery | 971,777 | Verizon Maryland Inc |
301-281-7 | Beltsville | Prince George's | 863,420 | Omnipoint Communications Cap Operations LLC |
301-281-0 | Rockville | Prince George's | 863,420 | MCImetro Access Transmission Services LLC |
301-282 | Fairland | Montgomery | 971,777 | Verizon Maryland Inc |
301-283-9 | Beltsville | Prince George's | 863,420 | Omnipoint Communications Cap Operations LLC |
301-284-4 | Herndon | Montgomery | 971,777 | Broadview Networks of Virginia Inc - VA |
301-284-8 | Washington | Montgomery | 971,777 | Bandwidth.com CLEC LLC - MD |
301-285 | Silver Spring | Montgomery | 971,777 | Verizon Maryland Inc |
301-286 | Berwyn Heights | Prince George's | 863,420 | Verizon Maryland Inc |
301-287-8 | Herndon | Montgomery | 971,777 | ATX Telecommunications Services Ltd |
301-288-7 | Alexandria | Montgomery | 971,777 | Comcast Phone of Northern Maryland Inc - MD |
301-288-8 | Herndon | Montgomery | 971,777 | Broadview Networks Inc - DC |
301-288-0 | Rockville | Montgomery | 971,777 | MCImetro Access Transmission Services LLC |
301-289-0 | Rockville | Prince George's | 863,420 | MCImetro Access Transmission Services LLC |
301-290-4 | Damascus | St. Mary's | 105,151 | Core Communications Inc - MD |
301-290-2 | Washington | St. Mary's | 105,151 | Cavalier East LLC - MD |
301-291-0 | Rockville | Prince George's | 863,420 | MCImetro Access Transmission Services LLC |
301-292 | Fort Washington | Prince George's | 863,420 | Verizon Maryland Inc |
301-293 | Frederick | Frederick | 233,385 | Verizon Maryland Inc |
301-294 | Rockville | Montgomery | 971,777 | Verizon Maryland Inc |
301-295 | Bethesda | Montgomery | 971,777 | Verizon Maryland Inc |
301-296-6 | Alexandria | Montgomery | 971,777 | Comcast Phone of Northern Maryland Inc - MD |
301-297-0 | Fort Washington | Prince George's | 863,420 | Verizon Maryland Inc |
301-298-0 | Damascus | Prince George's | 863,420 | Core Communications Inc - MD |
301-298-4 | Upper Marlboro | Prince George's | 863,420 | Verizon Maryland Inc |
301-299 | Bethesda | Montgomery | 971,777 | Verizon Maryland Inc |
No reviews yet. |
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