Local Calling Guide
Area code/prefix search
Gaithersburg, MD
1 2 3 4 5 6 7 8 9 10 11 12 13 14 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 227-227
| A |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-03-30 |
|
| 227-227
| 0 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-03-30 |
|
| 227-227
| 1 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-03-30 |
|
| 227-227
| 2 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-03-31 |
|
| 227-227
| 3 |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2024-07-06 |
|
| 227-227
| 4 |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2024-07-06 |
|
| 227-227
| 5 |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2024-07-06 |
|
| 227-227
| 6 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-04-13 |
|
| 227-227
| 7 |
|
145J TERRA NOVA TELECOM INC. |
236 |
|
2024-04-21 |
|
| 227-227
| 8 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-04-04 |
|
| 227-227
| 9 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-04-04 |
|
| 227-245
| A |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-08-04 |
|
| 227-245
| 0 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-08-04 |
|
| 227-245
| 1 |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2024-09-29 |
|
| 227-245
| 2 |
WASHDC12NMD |
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2024-10-24 |
|
| 227-245
| 3 |
WASHDC12NMD |
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2025-01-20 |
|
| 227-245
| 4 |
WASHDC12NMD |
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2026-02-09 |
|
| 227-245
| 5 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2024-09-27 |
|
| 227-245
| 6 |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2024-11-17 |
|
| 227-245
| 7 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-10-06 |
|
| 227-245
| 8 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-10-06 |
|
| 227-245
| 9 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-10-06 |
|
| 227-258
| A |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2024-12-22 |
|
| 227-258
| 0 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-09-06 |
|
| 227-258
| 1 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-01-06 |
|
| 227-258
| 2 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-03-02 |
|
| 227-258
| 3 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-05-03 |
|
| 227-258
| 4 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-05-03 |
|
| 227-258
| 5 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-05-31 |
|
| 227-258
| 6 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-11-08 |
|
| 227-258
| 7 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-11-08 |
|
| 227-258
| 8 |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2024-12-22 |
|
| 227-258
| 9 |
CHCHMDBEWMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2024-12-22 |
|
| 227-277
| A |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-06-28 |
|
| 227-277
| 0 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2025-07-11 |
|
| 227-277
| 1 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-08-31 |
|
| 227-277
| 2 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-08-31 |
|
| 227-277
| 3 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-08-31 |
|
| 227-277
| 4 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-08-31 |
|
| 227-277
| 5 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-08-31 |
|
| 227-277
| 6 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-08-31 |
|
| 227-277
| 7 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-11-08 |
|
| 227-277
| 8 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-06-28 |
|
| 227-277
| 9 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-06-28 |
|
| 227-500
| A |
WASHDC12X6X |
824J OPENTACT INC. |
236 |
|
2026-05-09 |
|
| 227-500
| 0 |
WASHDC12X6X |
824J OPENTACT INC. |
236 |
|
2026-05-09 |
|
| 227-500
| 1 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2026-05-11 |
|
| 227-500
| 8 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2026-07-07 |
|
| 227-500
| 9 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2026-05-30 |
|
| 227-529
| A |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2026-02-20 |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 >>
Last updated: Thu, 16 Jul 2026 02:21:55 UTC
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