Local Calling Guide
Area code/prefix search
Frederick, 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 |
| 240-656
| 2 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2020-01-05 |
|
| 240-656
| 3 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2020-01-05 |
|
| 240-656
| 4 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2020-07-10 |
|
| 240-656
| 5 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2020-10-24 |
|
| 240-656
| 6 |
HGTWMD53DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
240 |
|
2020-10-28 |
|
| 240-656
| 7 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2020-10-25 |
|
| 240-656
| 8 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2019-11-01 |
|
| 240-656
| 9 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2019-11-01 |
|
| 240-674
| A |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2024-02-09 |
|
| 240-674
| 0 |
FRDRMDFRKMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240 |
|
|
|
| 240-674
| 1 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
|
|
| 240-674
| 2 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
|
|
| 240-674
| 3 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
|
|
| 240-674
| 4 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
|
|
| 240-674
| 5 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
|
|
| 240-674
| 6 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
|
|
| 240-674
| 7 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
|
|
| 240-674
| 8 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
|
|
| 240-674
| 9 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
|
|
| 240-680
| A |
HGTWMD53DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
240 |
|
|
|
| 240-680
| 0 |
HGTWMD534MD |
197D VONAGE AMERICA LLC |
240 |
|
2018-12-21 |
|
| 240-680
| 1 |
HGTWMD534MD |
197D VONAGE AMERICA LLC |
240 |
|
2018-12-21 |
|
| 240-680
| 2 |
HGTWMD534MD |
197D VONAGE AMERICA LLC |
240 |
|
2018-12-21 |
|
| 240-680
| 3 |
HGTWMD534MD |
197D VONAGE AMERICA LLC |
240 |
|
2018-12-21 |
|
| 240-680
| 4 |
HGTWMD534MD |
197D VONAGE AMERICA LLC |
240 |
|
2018-12-21 |
|
| 240-680
| 5 |
HGTWMD534MD |
197D VONAGE AMERICA LLC |
240 |
|
2018-12-21 |
|
| 240-680
| 6 |
HGTWMD534MD |
197D VONAGE AMERICA LLC |
240 |
|
2018-12-21 |
|
| 240-680
| 7 |
HGTWMD534MD |
197D VONAGE AMERICA LLC |
240 |
|
2018-12-21 |
|
| 240-680
| 8 |
HGTWMD534MD |
197D VONAGE AMERICA LLC |
240 |
|
2018-12-21 |
|
| 240-680
| 9 |
HGTWMD53DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
240 |
|
2018-12-20 |
|
| 240-710
| A |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
|
|
| 240-710
| 0 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-710
| 1 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-710
| 2 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-710
| 3 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-710
| 4 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-710
| 5 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-710
| 6 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-710
| 7 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-710
| 8 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-710
| 9 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2020-02-13 |
|
| 240-739
| A |
CMLDMDCMWMD |
515J IP HORIZON LLC |
240 |
|
|
|
| 240-739
| 0 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2020-11-24 |
|
| 240-739
| 1 |
|
515J IP HORIZON LLC |
240 |
|
2020-11-06 |
|
| 240-739
| 2 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2020-11-24 |
|
| 240-739
| 3 |
FRDRMDFRXTX |
318J COMCAST IP PHONE, LLC |
240 |
|
2021-03-14 |
|
| 240-739
| 4 |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2020-12-31 |
|
| 240-739
| 5 |
CMLDMDCM2MD |
836G SHENTEL COMMUNICATIONS, LLC. - MD |
240 |
|
2021-07-23 |
|
| 240-739
| 6 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2021-08-16 |
|
| 240-739
| 7 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2021-08-16 |
|
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Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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