Local Calling Guide
Area code/prefix search
Washington Zone 13, MD
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| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 301-923
| 0 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-12-08 |
|
| 301-923
| 1 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-12-14 |
|
| 301-923
| 2 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-04-29 |
|
| 301-923
| 3 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-04-29 |
|
| 301-923
| 4 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2020-10-17 |
|
| 301-923
| 5 |
BTVLMD12CMA |
5562 METROPCS, INC. |
236 |
|
2020-10-05 |
|
| 301-923
| 6 |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2025-01-04 |
|
| 301-923
| 7 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-04-29 |
|
| 301-923
| 8 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 301-923
| 9 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2020-10-17 |
|
| 301-931
| A |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-931
| 0 |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-931
| 1 |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-931
| 2 |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-931
| 3 |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-931
| 4 |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-931
| 5 |
|
829J PAETEC ITEL, LLC |
236 |
|
2014-06-09 |
|
| 301-931
| 6 |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-931
| 7 |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-931
| 8 |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-931
| 9 |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-935
| A |
HYVLMDRIDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-935
| 0 |
HYVLMDRIDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-935
| 1 |
|
876D ONVOY, LLC - MD |
236 |
|
2025-04-06 |
|
| 301-935
| 2 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 301-935
| 3 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 301-935
| 4 |
HYVLMDRIDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-935
| 5 |
HYVLMDRIDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-935
| 6 |
HYVLMDRIDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-935
| 7 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 301-935
| 8 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 301-935
| 9 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 301-937
| A |
BTVLMDBVDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-939
| A |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-939
| 0 |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2020-04-19 |
|
| 301-939
| 1 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-939
| 2 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-939
| 3 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-939
| 4 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-939
| 5 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-939
| 6 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-939
| 7 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-939
| 8 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-10-23 |
|
| 301-939
| 9 |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-04-29 |
|
| 301-953
| A |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-953
| 0 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-953
| 1 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-953
| 2 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-953
| 3 |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 301-953
| 4 |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2021-11-08 |
|
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Last updated: Sat, 02 May 2026 12:20:53 UTC
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