Local Calling Guide
Area code/prefix search
Washington Zone 10, MD
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 240-715
| 0 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2024-12-12 |
|
| 240-715
| 1 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2024-12-12 |
|
| 240-715
| 2 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-02-13 |
|
| 240-715
| 3 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-715
| 4 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-715
| 5 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-02-13 |
|
| 240-715
| 6 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2024-09-28 |
|
| 240-715
| 7 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-05-06 |
|
| 240-715
| 8 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-07-09 |
|
| 240-715
| 9 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-728
| A |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
|
|
| 240-728
| 0 |
|
197D VONAGE AMERICA LLC |
236 |
|
2020-06-26 |
|
| 240-728
| 1 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-01-01 |
|
| 240-728
| 2 |
|
876D ONVOY, LLC - MD |
236 |
|
2020-10-17 |
|
| 240-728
| 3 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-01-01 |
|
| 240-728
| 4 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-01-01 |
|
| 240-728
| 5 |
|
197D VONAGE AMERICA LLC |
236 |
|
2020-06-26 |
|
| 240-728
| 6 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-01-01 |
|
| 240-728
| 7 |
|
876D ONVOY, LLC - MD |
236 |
|
2020-10-17 |
|
| 240-728
| 8 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2020-09-08 |
|
| 240-728
| 9 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2020-09-08 |
|
| 240-731
| A |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 240-740
| A |
VINNVACB1MD |
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
|
|
| 240-740
| 0 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-740
| 1 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-740
| 2 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-740
| 3 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-740
| 4 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-740
| 5 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-740
| 6 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-740
| 7 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-740
| 8 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-740
| 9 |
|
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-11-01 |
|
| 240-753
| A |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-753
| 0 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2008-12-13 |
|
| 240-753
| 1 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-04-26 |
|
| 240-753
| 2 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-07-03 |
|
| 240-753
| 3 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-07-03 |
|
| 240-753
| 4 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-07-03 |
|
| 240-753
| 5 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2006-08-10 |
|
| 240-753
| 6 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2013-03-09 |
|
| 240-753
| 7 |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2013-05-11 |
|
| 240-753
| 8 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2006-08-10 |
|
| 240-753
| 9 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2013-06-01 |
|
| 240-756
| A |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 240-756
| 0 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-07-08 |
|
| 240-756
| 1 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-07-08 |
|
| 240-756
| 2 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-07-08 |
|
| 240-756
| 3 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-07-08 |
|
| 240-756
| 4 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-04-10 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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