Area code 240 covers part of Marylandstate, covering most of Montgomery, Prince George's, Howard, St. Mary's, Charles 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 301, 410, 443, 667.
Date Changed | Change Details |
May 05, 2014 | Area code 301 subscribers are now overlayed with area code 240. Subscriber area code 240-803 was assigned on Apr 04, 2014 and is operational from May 05, 2014. |
Apr 25, 2014 | Area code 301 subscribers are now overlayed with area code 240. Subscriber area code 240-801 was assigned on Apr 01, 2014 and is operational from Apr 25, 2014. |
Apr 21, 2014 | Area code 301 subscribers are now overlayed with area code 240. Subscriber area code 240-833 was assigned on Apr 02, 2014 and is operational from Apr 21, 2014. |
Mar 21, 2014 | Area code 301 subscribers are now overlayed with area code 240. Subscriber area code 240-837 was assigned on Jul 19, 2010 and is operational from Mar 21, 2014. |
Mar 21, 2014 | Area code 301 subscribers are now overlayed with area code 240. Subscriber area code 240-848 was assigned on Jul 19, 2010 and is operational from Mar 21, 2014. |
Mar 21, 2014 | Area code 301 subscribers are now overlayed with area code 240. Subscriber area code 240-892 was assigned on Mar 25, 2011 and is operational from Mar 21, 2014. |
Area Code | City | County | Population | Network Operator |
240-800-4 | Alexandria | Montgomery | 971,777 | Comcast Phone of Northern Maryland Inc - MD |
240-800-0 | Chevy Chase | Montgomery | 971,777 | Core Communications Inc - MD |
240-800-9 | Silver Spring | Montgomery | 971,777 | Local Access LLC - MD |
240-800-2 | Washington | Montgomery | 971,777 | XO Maryland LLC |
240-801-4 | Alexandria | Montgomery | 971,777 | Comcast Phone of Northern Maryland Inc - MD |
240-801-0 | Annapolis Junction | Montgomery | 971,777 | Cellco Partnership dba Verizon Wireless - MD |
240-802-0 | Chevy Chase | Montgomery | 971,777 | 365 WIRELESS LLC |
240-803-4 | Frederick | Allegany | 75,087 | Level 3 Communications LLC - MD |
240-803-6 | Frederick | Allegany | 75,087 | Teleport Communications America LLC - MD |
240-803-3 | Hagerstown | Allegany | 75,087 | Bandwidth.com CLEC LLC - MD |
240-803-0 | Monrovia | Allegany | 75,087 | New Cingular Wireless PCS LLC - DC |
240-804-4 | Mc Lean | Charles | 146,551 | Level 3 Communications LLC - MD |
240-804-7 | Washington | Charles | 146,551 | Bandwidth.com CLEC LLC - MD |
240-804-0 | Washington | Charles | 146,551 | XO Maryland LLC |
240-811 | 147,813 | One Call Services-Pipeline And Utility Safety | ||
240-812-2 | Annapolis Junction | Montgomery | 971,777 | Cellco Partnership dba Verizon Wireless - MD |
240-812-5 | Mc Lean | Montgomery | 971,777 | Level 3 Communications LLC - MD |
240-812-9 | Washington | Montgomery | 971,777 | Bandwidth.com CLEC LLC - MD |
240-812-0 | Washington | Montgomery | 971,777 | Global Crossing Local Services Inc - MD |
240-812-6 | Washington | Montgomery | 971,777 | MCImetro Access Transmission Services LLC |
240-813-5 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
240-813-2 | Mc Lean | Montgomery | 971,777 | US LEC of Maryland Inc |
240-813-0 | Washington | Montgomery | 971,777 | ATX Telecommunications Services Ltd |
240-813-9 | Washington | Montgomery | 971,777 | Bandwidth.com CLEC LLC - MD |
240-813-7 | Washington | Montgomery | 971,777 | XO Maryland LLC |
240-818-9 | Frederick | Frederick | 233,385 | Cellco Partnership dba Verizon Wireless - MD |
240-818-0 | Smithsburg | Frederick | 233,385 | Verizon Maryland Inc |
240-821-4 | Beltsville | Montgomery | 971,777 | Omnipoint Communications Cap Operations LLC |
240-821-8 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
240-821-6 | Mc Lean | Montgomery | 971,777 | Level 3 Communications LLC - MD |
240-821-0 | Silver Spring | Montgomery | 971,777 | Lightwave Communications LLC - MD |
240-823-7 | Alexandria | Prince George's | 863,420 | Comcast Phone of Northern Maryland Inc - MD |
240-823-0 | Washington | Prince George's | 863,420 | XO Maryland LLC |
240-826-0 | Rockville | Montgomery | 971,777 | Verizon Maryland Inc |
240-832-0 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
240-833-8 | Alexandria | Montgomery | 971,777 | Comcast Phone of Northern Maryland Inc - MD |
240-833-0 | Washington | Montgomery | 971,777 | XO Maryland LLC |
240-837-3 | Beltsville | Charles | 146,551 | Omnipoint Communications Cap Operations LLC |
240-837-9 | Silver Spring | Charles | 146,551 | Peerless Network of Maryland LLC |
240-837-2 | Washington | Charles | 146,551 | Bandwidth.com CLEC LLC - MD |
240-837-8 | Washington | Charles | 146,551 | Broadvox - CLEC LLC - DC |
240-837-0 | Washington | Charles | 146,551 | XO Maryland LLC |
240-838-7 | Alexandria | Prince George's | 863,420 | Comcast Phone of Northern Maryland Inc - MD |
240-838-0 | Beltsville | Prince George's | 863,420 | Omnipoint Communications Cap Operations LLC |
240-839-0 | Adelphi | Montgomery | 971,777 | Cellco Partnership dba Verizon Wireless - MD |
240-839-7 | Alexandria | Montgomery | 971,777 | Comcast Phone of Northern Maryland Inc - MD |
240-839-8 | Beltsville | Montgomery | 971,777 | Omnipoint Communications Cap Operations LLC |
240-839-6 | Mc Lean | Montgomery | 971,777 | Level 3 Communications LLC - MD |
240-839-2 | Station Hills | Montgomery | 971,777 | Leap Wireless International Inc dba Cricket Communications Inc |
240-839-1 | Washington | Montgomery | 971,777 | Bandwidth.com CLEC LLC - MD |
240-839-5 | Washington | Montgomery | 971,777 | Cbeyond Communications LLC - MD |
240-839-9 | Washington | Montgomery | 971,777 | Peerless Network of Maryland LLC |
240-841-0 | Baltimore | Howard | 287,085 | Allegiance Telecom of Maryland Inc |
240-841-9 | Baltimore | Howard | 287,085 | Cellco Partnership dba Verizon Wireless - MD |
240-841-7 | Pikesville | Howard | 287,085 | Broadview Networks Inc - MD |
240-842-0 | Baltimore | Howard | 287,085 | Allegiance Telecom of Maryland Inc |
240-842-3 | Baltimore | Howard | 287,085 | Bandwidth.com CLEC LLC - MD |
240-842-5 | Baltimore | Howard | 287,085 | Core Communications Inc - MD |
240-843-0 | Baltimore | Howard | 287,085 | Allegiance Telecom of Maryland Inc |
240-844-9 | Herndon | St. Mary's | 105,151 | ATX Telecommunications Services Ltd |
240-844-2 | Washington | St. Mary's | 105,151 | Bandwidth.com CLEC LLC - MD |
240-844-3 | Washington | St. Mary's | 105,151 | Broadvox - CLEC LLC - DC |
240-844-0 | Washington | St. Mary's | 105,151 | XO Maryland LLC |
240-845-0 | Washington | Prince George's | 863,420 | XO Maryland LLC |
240-846-3 | Washington | Prince George's | 863,420 | Bandwidth.com CLEC LLC - MD |
240-846-0 | Washington | Prince George's | 863,420 | XO Maryland LLC |
240-848-8 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
240-848-0 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
240-848-6 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP - MD |
240-848-9 | Laurel | Montgomery | 971,777 | tw telecom of dc llc - DC |
240-848-7 | Washington | Montgomery | 971,777 | Bandwidth.com CLEC LLC - MD |
240-855-0 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
240-855-0 | Mc Lean | Montgomery | 971,777 | Level 3 Communications LLC - MD |
240-857 | Laurel | Prince George's | 863,420 | tw telecom of maryland - MD |
240-863-8 | Adelphi | Montgomery | 971,777 | Cellco Partnership dba Verizon Wireless - MD |
240-863-3 | Alexandria | Montgomery | 971,777 | Comcast Phone of Northern Maryland Inc - MD |
240-863-9 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
240-863-0 | Laurel | Montgomery | 971,777 | tw telecom of maryland - MD |
240-863-2 | Washington | Montgomery | 971,777 | Bandwidth.com CLEC LLC - MD |
240-864 | Washington | Montgomery | 971,777 | Cavalier East LLC - MD |
240-865-6 | Annapolis | Howard | 287,085 | Broadwing Communications LLC - MD |
240-865-9 | Baltimore | Howard | 287,085 | Baltimore-Washington Telephone (BWT) |
240-865-2 | Baltimore | Howard | 287,085 | Core Communications Inc - MD |
240-865-1 | Baltimore | Howard | 287,085 | CTC Communications Corporation - MD |
240-865-0 | Baltimore | Howard | 287,085 | Level 3 Communications LLC - MD |
240-865-8 | Baltimore | Howard | 287,085 | MCImetro Access Transmission Services LLC |
240-865-5 | Chevy Chase | Howard | 287,085 | Paetec Communications Inc - MD |
240-865-7 | Pikesville | Howard | 287,085 | Broadview Networks Inc - MD |
240-865-3 | Pikesville | Howard | 287,085 | Broadvox-CLEC LLC - MD |
240-865-0 | White Marsh | Howard | 287,085 | Comcast Phone of Northern Maryland Inc - MD |
240-868-6 | Washington | Montgomery | 971,777 | Broadwing Communications LLC - MD |
240-868-0 | Washington | Montgomery | 971,777 | Cavalier East LLC - MD |
240-876 | Beltsville | Montgomery | 971,777 | Sprint Spectrum LP |
240-880-0 | Washington | Montgomery | 971,777 | Broadwing Communications LLC - MD |
240-880-8 | Washington | Montgomery | 971,777 | YMax Communications Corporation - MD |
240-882 | Beltsville | Prince George's | 863,420 | Sprint Spectrum LP |
240-883-8 | Beltsville | Montgomery | 971,777 | Omnipoint Communications Cap Operations LLC |
240-883-5 | Washington | Montgomery | 971,777 | Broadvox - CLEC LLC - DC |
240-883-0 | Washington | Montgomery | 971,777 | Broadwing Communications LLC - MD |
240-888 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
240-892-4 | Washington | Prince George's | 863,420 | Bandwidth.com CLEC LLC - MD |
240-893 | Beltsville | Montgomery | 971,777 | New Cingular Wireless PCS LLC - DC |
240-895-0 | Lexington Park | St. Mary's | 105,151 | Verizon Maryland Inc |
240-895-8 | Washington | St. Mary's | 105,151 | MCImetro Access Transmission Services LLC |
240-897-0 | Washington | Prince George's | 863,420 | Broadwing Communications LLC - MD |
240-898-8 | Beltsville | Prince George's | 863,420 | Omnipoint Communications Cap Operations LLC |
240-898-0 | Washington | Prince George's | 863,420 | Broadwing Communications LLC - MD |
240-899 | Beltsville | Montgomery | 971,777 | Omnipoint Communications Cap Operations LLC |
Gerardo Morazan De Lira commented on
240-833-8331
This review was created at 2011-04-23T22:35
8331697240
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