Local Calling Guide
Area code/prefix search
Washington Zone 3, MD
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 240-821
| 1 |
WASHDCSWXZZ |
829J PAETEC ITEL, LLC |
236 |
|
2005-06-26 |
|
| 240-821
| 2 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2005-09-23 |
|
| 240-821
| 3 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2005-10-09 |
|
| 240-821
| 4 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2005-11-07 |
|
| 240-821
| 5 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2006-01-28 |
|
| 240-821
| 6 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2006-01-28 |
|
| 240-821
| 7 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-01-09 |
|
| 240-821
| 8 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2005-09-19 |
|
| 240-821
| 9 |
WASHDCSWXZZ |
829J PAETEC ITEL, LLC |
236 |
|
2006-03-26 |
|
| 240-839
| A |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 240-839
| 0 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2007-03-09 |
|
| 240-839
| 1 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2011-03-01 |
|
| 240-839
| 2 |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2011-04-02 |
|
| 240-839
| 3 |
WASHDCSWXZZ |
829J PAETEC ITEL, LLC |
236 |
|
2014-09-05 |
|
| 240-839
| 4 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2010-06-21 |
|
| 240-839
| 5 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2008-10-05 |
|
| 240-839
| 6 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2014-04-26 |
|
| 240-839
| 7 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2007-08-01 |
|
| 240-839
| 8 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2007-11-15 |
|
| 240-839
| 9 |
WASHDC12DS6 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2013-10-17 |
|
| 240-847
| A |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
|
|
| 240-847
| 0 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-02-08 |
|
| 240-847
| 1 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-02-08 |
|
| 240-847
| 2 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-02-25 |
|
| 240-847
| 3 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-02-25 |
|
| 240-847
| 4 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2016-09-08 |
|
| 240-847
| 5 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-10-01 |
|
| 240-847
| 6 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-10-01 |
|
| 240-847
| 7 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2016-03-01 |
|
| 240-847
| 8 |
WASHDCDTDS1 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
2016-06-13 |
|
| 240-847
| 9 |
|
515J IP HORIZON LLC |
236 |
|
2016-05-31 |
|
| 240-863
| A |
LARLMDCCAMD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
| 240-863
| 0 |
LARLMDCCAMD |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
236 |
|
|
|
| 240-863
| 1 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2005-07-02 |
|
| 240-863
| 2 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2011-01-27 |
|
| 240-863
| 3 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2007-08-20 |
|
| 240-863
| 4 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-06-02 |
|
| 240-863
| 5 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-06-16 |
|
| 240-863
| 6 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-07-04 |
|
| 240-863
| 7 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2005-06-19 |
|
| 240-863
| 8 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2005-06-02 |
|
| 240-863
| 9 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-10-05 |
|
| 240-867
| A |
SLSPMD913MD |
939H COMMIO, LLC |
236 |
|
|
|
| 240-867
| 0 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 240-867
| 1 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 240-867
| 2 |
WASHDCINDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2018-06-04 |
|
| 240-867
| 3 |
WASHDCINDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2018-06-04 |
|
| 240-867
| 4 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-03-29 |
|
| 240-867
| 5 |
SLSPMD913MD |
939H COMMIO, LLC |
236 |
|
2017-08-11 |
|
| 240-867
| 6 |
|
515J IP HORIZON LLC |
236 |
|
2019-04-26 |
|
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Last updated: Sat, 01 Aug 2026 03:19:33 UTC
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