Local Calling Guide
Area code/prefix search
Baltimore, MD
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 667-461
| 4 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-12-31 |
|
| 667-461
| 5 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-12-31 |
|
| 667-461
| 6 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-12-31 |
|
| 667-461
| 7 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-08-10 |
|
| 667-461
| 8 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-08-10 |
|
| 667-461
| 9 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-08-10 |
|
| 667-464
| A |
BLTQMD01BMD |
516J TON80 COMMUNICATIONS, LLC |
238 |
|
|
|
| 667-464
| 0 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2022-05-06 |
|
| 667-464
| 1 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2022-05-06 |
|
| 667-464
| 2 |
BLTQMD01BMD |
516J TON80 COMMUNICATIONS, LLC |
238 |
|
2022-04-03 |
|
| 667-464
| 3 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2022-05-22 |
|
| 667-464
| 4 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2022-05-22 |
|
| 667-464
| 5 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2022-05-06 |
|
| 667-464
| 6 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2022-04-04 |
|
| 667-464
| 7 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2022-04-04 |
|
| 667-464
| 8 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2022-05-06 |
|
| 667-464
| 9 |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2022-05-06 |
|
| 667-487
| A |
BLTMMDSNJMD |
475J CALLWORKS CORPORATION |
238 |
|
2024-07-11 |
|
| 667-487
| 0 |
BLTQMD019MD |
490J BOOST SUBSCRIBERCO L.L.C. |
238 |
|
2024-10-16 |
|
| 667-487
| 1 |
BLTMMDSNJMD |
475J CALLWORKS CORPORATION |
238 |
|
2024-07-11 |
|
| 667-487
| 2 |
BLTQMD019MD |
490J BOOST SUBSCRIBERCO L.L.C. |
238 |
|
2024-12-16 |
|
| 667-487
| 3 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-11-17 |
|
| 667-487
| 4 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-11-17 |
|
| 667-487
| 5 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-11-17 |
|
| 667-487
| 6 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-11-17 |
|
| 667-487
| 7 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-11-17 |
|
| 667-487
| 8 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-11-17 |
|
| 667-487
| 9 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-11-17 |
|
| 667-495
| A |
BLTQMD01GMD |
616J LEAP TELECOM, LLC |
238 |
|
2024-12-28 |
|
| 667-495
| 0 |
BLTQMD01GMD |
616J LEAP TELECOM, LLC |
238 |
|
2024-12-28 |
|
| 667-495
| 1 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-12-31 |
|
| 667-495
| 2 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-12-31 |
|
| 667-495
| 3 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2024-12-31 |
|
| 667-495
| 4 |
BLTQMD019MD |
490J BOOST SUBSCRIBERCO L.L.C. |
238 |
|
2025-01-31 |
|
| 667-495
| 5 |
BLTQMD019MD |
490J BOOST SUBSCRIBERCO L.L.C. |
238 |
|
2025-02-24 |
|
| 667-495
| 6 |
BLTQMD019MD |
490J BOOST SUBSCRIBERCO L.L.C. |
238 |
|
2025-03-24 |
|
| 667-495
| 7 |
BLTQMD019MD |
490J BOOST SUBSCRIBERCO L.L.C. |
238 |
|
2025-04-28 |
|
| 667-495
| 8 |
BLTQMD019MD |
490J BOOST SUBSCRIBERCO L.L.C. |
238 |
|
2025-05-26 |
|
| 667-495
| 9 |
BLTQMD019MD |
490J BOOST SUBSCRIBERCO L.L.C. |
238 |
|
2025-06-23 |
|
| 667-503
| A |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2025-03-22 |
|
| 667-503
| 0 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2025-03-22 |
|
| 667-503
| 1 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2025-03-22 |
|
| 667-503
| 2 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2025-03-22 |
|
| 667-503
| 3 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2025-03-22 |
|
| 667-503
| 4 |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2025-03-22 |
|
| 667-503
| 5 |
CLMAMDORAMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2025-03-24 |
|
| 667-503
| 6 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2025-03-24 |
|
| 667-503
| 7 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2025-03-24 |
|
| 667-503
| 8 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2025-03-24 |
|
| 667-503
| 9 |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2025-03-24 |
|
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 >>
Last updated: Tue, 29 Sep 2026 03:00:13 UTC
Sponsored by: VoIP Much Phone Company
Like this site? We accept donations via PayPal.