Local Calling Guide
Area code/prefix search
Catonsville, MD
<< 1 2 3 4 5
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 667-445
| 8 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2023-09-23 |
|
| 667-445
| 9 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2023-09-23 |
|
| 667-452
| A |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
| 667-452
| 0 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2023-12-08 |
|
| 667-452
| 3 |
|
876D ONVOY, LLC - MD |
238 |
|
2024-02-26 |
|
| 667-452
| 4 |
|
876D ONVOY, LLC - MD |
238 |
|
2024-02-26 |
|
| 667-452
| 5 |
|
876D ONVOY, LLC - MD |
238 |
|
2024-02-26 |
|
| 667-452
| 6 |
|
876D ONVOY, LLC - MD |
238 |
|
2024-02-26 |
|
| 667-452
| 7 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2023-10-29 |
|
| 667-452
| 8 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2023-10-29 |
|
| 667-452
| 9 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2023-10-29 |
|
| 667-482
| A |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-07-04 |
|
| 667-482
| 1 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2025-05-14 |
|
| 667-482
| 2 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2025-05-14 |
|
| 667-482
| 3 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2025-05-14 |
|
| 667-482
| 4 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2025-05-14 |
|
| 667-482
| 5 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-07-04 |
|
| 667-482
| 6 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-07-04 |
|
| 667-482
| 7 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-07-04 |
|
| 667-482
| 8 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-07-04 |
|
| 667-482
| 9 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-07-04 |
|
| 667-517
| A |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2024-12-23 |
|
| 667-517
| 9 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2024-12-23 |
|
| 667-626
| A |
BLTQMD01BMD |
516J TON80 COMMUNICATIONS, LLC |
238 |
|
|
|
| 667-626
| 0 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2022-09-22 |
|
| 667-626
| 1 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2022-09-22 |
|
| 667-626
| 3 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-12-04 |
|
| 667-626
| 4 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-12-04 |
|
| 667-626
| 5 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-12-04 |
|
| 667-626
| 6 |
|
516J TON80 COMMUNICATIONS, LLC |
238 |
|
2022-05-02 |
|
| 667-626
| 7 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-12-04 |
|
| 667-626
| 8 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-12-04 |
|
| 667-626
| 9 |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-12-04 |
|
| 667-802
| A |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
| 667-802
| 0 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2015-07-23 |
|
| 667-802
| 1 |
|
876D ONVOY, LLC - MD |
238 |
|
2016-01-21 |
|
| 667-802
| 2 |
|
876D ONVOY, LLC - MD |
238 |
|
2016-03-03 |
|
| 667-802
| 3 |
|
964H BARR TELL USA, INC. |
238 |
|
2016-12-17 |
|
| 667-802
| 4 |
|
876D ONVOY, LLC - MD |
238 |
|
2016-03-03 |
|
| 667-802
| 5 |
|
318J COMCAST IP PHONE, LLC |
238 |
|
2016-12-15 |
|
| 667-802
| 6 |
|
073H TELNYX LLC |
238 |
|
2017-03-14 |
|
| 667-802
| 7 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2019-09-13 |
|
| 667-802
| 8 |
|
939H COMMIO, LLC |
238 |
|
2016-05-31 |
|
| 667-802
| 9 |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2015-04-20 |
|
<< 1 2 3 4 5
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
Sponsored by: Callcentric - VoIP Internet phone service
Like this site? We accept donations via PayPal.