Local Calling Guide
Area code/prefix search
Washington Zone 4, MD
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 240-487
| 7 |
|
829J PAETEC ITEL, LLC |
236 |
|
2005-07-04 |
|
| 240-487
| 8 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2011-08-11 |
|
| 240-487
| 9 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2008-12-13 |
|
| 240-495
| A |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 240-495
| 0 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2013-12-27 |
|
| 240-495
| 1 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2014-05-01 |
|
| 240-495
| 2 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2015-01-27 |
|
| 240-495
| 3 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2014-08-01 |
|
| 240-495
| 4 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2014-10-10 |
|
| 240-495
| 5 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2014-09-01 |
|
| 240-495
| 6 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2014-07-04 |
|
| 240-495
| 7 |
WASIDCRG7MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
236 |
|
2014-04-02 |
|
| 240-495
| 8 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2014-08-09 |
|
| 240-495
| 9 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2014-08-09 |
|
| 240-539
| A |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
|
|
| 240-539
| 0 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2020-02-09 |
|
| 240-539
| 1 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2021-01-03 |
|
| 240-539
| 2 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2020-09-21 |
|
| 240-539
| 3 |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2020-04-19 |
|
| 240-539
| 4 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2020-09-21 |
|
| 240-539
| 5 |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2020-09-05 |
|
| 240-539
| 6 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2020-09-21 |
|
| 240-539
| 7 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2021-06-03 |
|
| 240-539
| 8 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2021-01-03 |
|
| 240-539
| 9 |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
|
|
| 240-582
| A |
HYVLMDHYDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-582
| 0 |
HYVLMDHYDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-582
| 1 |
WASLDCRGDS0 |
281E YMAX COMMUNICATIONS CORP. - MD |
236 |
|
2008-10-10 |
|
| 240-582
| 2 |
HYVLMDHYDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-582
| 3 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2010-04-29 |
|
| 240-582
| 4 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2007-09-13 |
|
| 240-582
| 5 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2012-10-07 |
|
| 240-582
| 6 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-10-06 |
|
| 240-582
| 7 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-10-06 |
|
| 240-582
| 8 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2007-03-26 |
|
| 240-582
| 9 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2007-03-26 |
|
| 240-610
| A |
CHCHMDBEPS0 |
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2024-01-16 |
|
| 240-610
| 0 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-08-02 |
|
| 240-610
| 1 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2023-05-24 |
|
| 240-610
| 2 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2023-05-24 |
|
| 240-610
| 3 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2019-01-19 |
|
| 240-610
| 4 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2019-09-24 |
|
| 240-610
| 5 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2019-09-24 |
|
| 240-610
| 6 |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2020-06-08 |
|
| 240-610
| 7 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2019-11-08 |
|
| 240-610
| 8 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2018-12-10 |
|
| 240-610
| 9 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2021-09-16 |
|
| 240-613
| A |
|
829J PAETEC ITEL, LLC |
236 |
|
2025-04-02 |
|
| 240-613
| 0 |
|
2589 US LEC OF MARYLAND, INC. |
236 |
|
2012-05-27 |
|
| 240-613
| 1 |
|
2589 US LEC OF MARYLAND, INC. |
236 |
|
2012-05-27 |
|
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 >>
Last updated: Sat, 02 May 2026 12:20:53 UTC
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