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 |
| 301-801
| A |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 301-802
| A |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 301-806
| A |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 0 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 1 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 2 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 3 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 4 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 5 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 6 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 7 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 8 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-806
| 9 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-807
| A |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 301-819
| A |
SLSPMDSSDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-830
| A |
|
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
236 |
|
|
|
| 301-830
| 0 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2005-08-01 |
|
| 301-830
| 1 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2005-08-01 |
|
| 301-830
| 2 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2005-08-01 |
|
| 301-830
| 3 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2005-09-01 |
|
| 301-830
| 4 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2005-01-04 |
|
| 301-830
| 5 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2005-01-04 |
|
| 301-830
| 6 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2007-08-13 |
|
| 301-830
| 7 |
WASHDCSWXZZ |
829J PAETEC ITEL, LLC |
236 |
|
2006-01-09 |
|
| 301-830
| 8 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2005-02-14 |
|
| 301-830
| 9 |
OCQNVAXAVMD |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 301-844
| A |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 301-844
| 0 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2011-11-18 |
|
| 301-844
| 1 |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-09-12 |
|
| 301-844
| 2 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2026-08-08 |
|
| 301-844
| 3 |
WASHDC12NMD |
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2026-07-24 |
|
| 301-844
| 4 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2012-12-02 |
|
| 301-844
| 5 |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2014-07-21 |
|
| 301-844
| 6 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2014-06-21 |
|
| 301-844
| 7 |
WASIDCRG7MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
236 |
|
2013-10-01 |
|
| 301-844
| 8 |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-09-12 |
|
| 301-844
| 9 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-10-04 |
|
| 301-873
| A |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 301-891
| A |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 0 |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 1 |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 2 |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 3 |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 4 |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 5 |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 6 |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 7 |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 8 |
HYVLMDCMRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-891
| 9 |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2014-11-06 |
|
| 301-905
| A |
SLSPMDNWRP0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
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Last updated: Sat, 01 Aug 2026 03:19:33 UTC
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