Local Calling Guide
Area code/prefix search
Towson, MD
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 667-294
| A |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
| 667-294
| 0 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2020-11-06 |
|
| 667-294
| 1 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-05-23 |
|
| 667-294
| 2 |
|
876D ONVOY, LLC - MD |
238 |
|
2025-09-28 |
|
| 667-294
| 3 |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2022-09-30 |
|
| 667-294
| 4 |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2021-02-26 |
|
| 667-294
| 5 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-11-05 |
|
| 667-294
| 6 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-11-05 |
|
| 667-294
| 7 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-11-05 |
|
| 667-294
| 8 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-11-05 |
|
| 667-294
| 9 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-11-05 |
|
| 667-308
| A |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
|
|
| 667-308
| 0 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2021-07-20 |
|
| 667-308
| 1 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2023-07-19 |
|
| 667-308
| 2 |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2013-07-24 |
|
| 667-308
| 3 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-09-01 |
|
| 667-308
| 4 |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
2013-08-15 |
|
| 667-308
| 5 |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
2013-09-06 |
|
| 667-308
| 6 |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
2013-09-06 |
|
| 667-308
| 7 |
BLTMMDDN2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2013-10-01 |
|
| 667-308
| 8 |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-01-11 |
|
| 667-308
| 9 |
|
515J IP HORIZON LLC |
238 |
|
2013-09-06 |
|
| 667-331
| A |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
| 667-331
| 0 |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2021-08-23 |
|
| 667-331
| 1 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-05-10 |
|
| 667-331
| 2 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-05-10 |
|
| 667-331
| 3 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-05-10 |
|
| 667-331
| 4 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2021-08-23 |
|
| 667-331
| 5 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2021-08-22 |
|
| 667-331
| 6 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2021-08-22 |
|
| 667-331
| 7 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2021-08-22 |
|
| 667-331
| 8 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2021-08-22 |
|
| 667-331
| 9 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2021-08-22 |
|
| 667-383
| A |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
| 667-383
| 0 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-04-03 |
|
| 667-383
| 1 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2022-03-20 |
|
| 667-383
| 2 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2022-03-20 |
|
| 667-383
| 4 |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-04-03 |
|
| 667-383
| 5 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2022-01-21 |
|
| 667-383
| 6 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2023-07-19 |
|
| 667-383
| 7 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2022-10-16 |
|
| 667-383
| 8 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2022-10-16 |
|
| 667-383
| 9 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2022-01-21 |
|
| 667-403
| A |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
|
|
| 667-403
| 0 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2021-11-01 |
|
| 667-403
| 1 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2021-11-01 |
|
| 667-403
| 2 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-10-31 |
|
| 667-403
| 3 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-11-18 |
|
| 667-403
| 4 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-11-18 |
|
| 667-403
| 5 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-11-18 |
|
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Last updated: Sat, 02 May 2026 12:20:53 UTC
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