Local Calling Guide
Area code/prefix search
Washington Zone 10, MD
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 227-338
| 4 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2025-12-23 |
|
| 227-338
| 5 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2025-12-23 |
|
| 227-338
| 6 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2025-12-23 |
|
| 227-338
| 7 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2025-12-23 |
|
| 227-338
| 8 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2025-12-23 |
|
| 227-338
| 9 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-12-04 |
|
| 227-999
| A |
WASHDCSWFMD |
530H WIDE VOICE, LLC - MD |
236 |
|
|
|
| 227-999
| 0 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-10-01 |
|
| 227-999
| 1 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-02-19 |
|
| 227-999
| 2 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-02-19 |
|
| 227-999
| 3 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-02-19 |
|
| 227-999
| 4 |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2024-01-14 |
|
| 227-999
| 5 |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2024-01-14 |
|
| 227-999
| 6 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-02-19 |
|
| 227-999
| 7 |
WASHDCSWNMD |
321J HD CARRIER LLC |
236 |
|
2023-12-15 |
|
| 227-999
| 8 |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2024-02-19 |
|
| 227-999
| 9 |
WASHDCSWFMD |
530H WIDE VOICE, LLC - MD |
236 |
|
2023-12-15 |
|
| 240-205
| A |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 240-205
| 0 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-03-04 |
|
| 240-205
| 1 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2003-09-13 |
|
| 240-205
| 2 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2003-09-13 |
|
| 240-205
| 3 |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2003-09-13 |
|
| 240-205
| 4 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2005-12-02 |
|
| 240-205
| 5 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2005-12-02 |
|
| 240-205
| 6 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-10-02 |
|
| 240-205
| 7 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2006-01-02 |
|
| 240-205
| 8 |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2006-01-02 |
|
| 240-205
| 9 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-04-01 |
|
| 240-238
| A |
|
829J PAETEC ITEL, LLC |
236 |
|
2025-04-02 |
|
| 240-268
| A |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-268
| 0 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-268
| 1 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-268
| 2 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-268
| 3 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-268
| 4 |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2017-09-01 |
|
| 240-268
| 5 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-268
| 6 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-268
| 7 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-268
| 8 |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-268
| 9 |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2022-11-08 |
|
| 240-276
| A |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-276
| 0 |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-25 |
|
| 240-276
| 1 |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-25 |
|
| 240-276
| 2 |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-25 |
|
| 240-276
| 3 |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-25 |
|
| 240-276
| 4 |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-25 |
|
| 240-276
| 5 |
GTBGMDGBPS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-25 |
|
| 240-276
| 6 |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-25 |
|
| 240-276
| 7 |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-25 |
|
| 240-276
| 8 |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2004-06-25 |
|
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Last updated: Sun, 17 May 2026 03:26:51 UTC
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