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 |
| 227-205
| A |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 227-205
| 0 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2023-10-20 |
|
| 227-205
| 1 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2023-10-20 |
|
| 227-205
| 2 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2023-10-20 |
|
| 227-205
| 3 |
SLSPMD913MD |
939H COMMIO, LLC |
236 |
|
2023-12-21 |
|
| 227-205
| 4 |
SLSPMD913MD |
939H COMMIO, LLC |
236 |
|
2023-12-21 |
|
| 227-205
| 5 |
SLSPMD913MD |
939H COMMIO, LLC |
236 |
|
2023-12-21 |
|
| 227-205
| 6 |
SLSPMD913MD |
939H COMMIO, LLC |
236 |
|
2023-12-21 |
|
| 227-205
| 7 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2024-09-28 |
|
| 227-205
| 8 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2023-10-15 |
|
| 227-205
| 9 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2023-10-15 |
|
| 227-229
| A |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-03-30 |
|
| 227-229
| 0 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-03-30 |
|
| 227-229
| 1 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-03-30 |
|
| 227-229
| 2 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-03-30 |
|
| 227-229
| 3 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-03-30 |
|
| 227-229
| 4 |
WASHDC12NMD |
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2024-04-11 |
|
| 227-229
| 5 |
WASHDC12NMD |
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2024-08-31 |
|
| 227-229
| 6 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2024-06-27 |
|
| 227-229
| 7 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2024-06-27 |
|
| 227-229
| 8 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2024-03-31 |
|
| 227-229
| 9 |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2024-12-16 |
|
| 227-249
| A |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-09-14 |
|
| 227-249
| 0 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-09-14 |
|
| 227-249
| 1 |
|
876D ONVOY, LLC - MD |
236 |
|
2024-09-15 |
|
| 227-249
| 2 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2024-11-18 |
|
| 227-249
| 3 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2024-11-18 |
|
| 227-249
| 4 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2024-11-18 |
|
| 227-249
| 5 |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2024-12-05 |
|
| 227-249
| 6 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2024-10-18 |
|
| 227-249
| 7 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2024-10-18 |
|
| 227-249
| 8 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-10-06 |
|
| 227-249
| 9 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-10-06 |
|
| 227-275
| A |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2025-06-01 |
|
| 227-275
| 0 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2025-06-01 |
|
| 227-275
| 1 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-08-21 |
|
| 227-275
| 3 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2026-01-08 |
|
| 227-275
| 4 |
|
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2026-01-18 |
|
| 227-275
| 5 |
|
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2026-02-24 |
|
| 227-275
| 6 |
|
876D ONVOY, LLC - MD |
236 |
|
2025-11-08 |
|
| 227-275
| 7 |
|
876D ONVOY, LLC - MD |
236 |
|
2025-11-08 |
|
| 227-275
| 8 |
|
876D ONVOY, LLC - MD |
236 |
|
2025-11-08 |
|
| 227-275
| 9 |
|
876D ONVOY, LLC - MD |
236 |
|
2025-09-06 |
|
| 227-302
| A |
|
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2026-06-04 |
|
| 227-302
| 0 |
|
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2026-06-04 |
|
| 227-302
| 1 |
|
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2026-07-28 |
|
| 227-302
| 2 |
|
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2026-08-25 |
|
| 227-302
| 3 |
|
490J BOOST SUBSCRIBERCO L.L.C. |
236 |
|
2026-09-28 |
|
| 227-772
| A |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2025-01-02 |
|
| 227-772
| 0 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2025-01-09 |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 >>
Last updated: Sat, 02 May 2026 12:20:53 UTC
Sponsored by: BeeVox - Whitelabel Reseller Platform
Like this site? We accept donations via PayPal.