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 |
| 227-203
| A |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
|
|
| 227-203
| 0 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2023-10-07 |
|
| 227-203
| 1 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2023-10-06 |
|
| 227-203
| 2 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2023-10-06 |
|
| 227-203
| 3 |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2023-10-06 |
|
| 227-203
| 4 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2023-10-07 |
|
| 227-203
| 5 |
CMLDMDCMUMD |
073H TELNYX LLC |
240 |
|
2024-01-14 |
|
| 227-203
| 6 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2024-01-05 |
|
| 227-203
| 7 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-09-15 |
|
| 227-203
| 8 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2024-08-26 |
|
| 227-203
| 9 |
HGTWMD53DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
240 |
|
2023-10-07 |
|
| 227-223
| A |
HGTWMD539MD |
939H COMMIO, LLC |
240 |
|
2024-01-22 |
|
| 227-223
| 0 |
HGTWMD539MD |
939H COMMIO, LLC |
240 |
|
2024-01-22 |
|
| 227-223
| 1 |
HGTWMD539MD |
939H COMMIO, LLC |
240 |
|
2024-01-22 |
|
| 227-223
| 2 |
HGTWMD539MD |
939H COMMIO, LLC |
240 |
|
2024-01-22 |
|
| 227-223
| 3 |
HGTWMD53FMD |
490J BOOST SUBSCRIBERCO L.L.C. |
240 |
|
2024-01-23 |
|
| 227-223
| 4 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2025-01-13 |
|
| 227-223
| 5 |
|
876D ONVOY, LLC - MD |
240 |
|
2025-06-02 |
|
| 227-223
| 6 |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2025-06-02 |
|
| 227-223
| 7 |
HGTWMDHGDMD |
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2024-10-19 |
|
| 227-223
| 8 |
HGTWMDHGDMD |
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2024-10-19 |
|
| 227-223
| 9 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2024-01-28 |
|
| 227-226
| A |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-03-30 |
|
| 227-226
| 0 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-03-30 |
|
| 227-226
| 1 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-03-30 |
|
| 227-226
| 2 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-03-30 |
|
| 227-226
| 3 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-03-30 |
|
| 227-226
| 4 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-03-30 |
|
| 227-226
| 5 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-03-30 |
|
| 227-226
| 6 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-03-30 |
|
| 227-226
| 7 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2024-08-26 |
|
| 227-226
| 8 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2024-08-26 |
|
| 227-226
| 9 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2024-08-26 |
|
| 227-253
| A |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-11-17 |
|
| 227-253
| 0 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-11-17 |
|
| 227-253
| 1 |
MRBGWVBUX0X |
732J NUSO, LLC |
240 |
|
2024-11-18 |
|
| 227-253
| 2 |
MRBGWVBUX0X |
732J NUSO, LLC |
240 |
|
2024-11-18 |
|
| 227-253
| 3 |
MRBGWVBUX0X |
732J NUSO, LLC |
240 |
|
2024-11-18 |
|
| 227-253
| 4 |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2024-11-18 |
|
| 227-253
| 5 |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2024-11-21 |
|
| 227-253
| 6 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2024-12-23 |
|
| 227-253
| 7 |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2024-12-23 |
|
| 227-253
| 8 |
CMLDMDCMUMD |
073H TELNYX LLC |
240 |
|
2024-11-18 |
|
| 227-253
| 9 |
CMLDMDCMUMD |
073H TELNYX LLC |
240 |
|
2024-11-18 |
|
| 227-281
| A |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2025-07-28 |
|
| 227-281
| 0 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2025-07-28 |
|
| 227-281
| 1 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2025-07-28 |
|
| 227-281
| 2 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2026-03-30 |
|
| 227-281
| 3 |
|
732J NUSO, LLC |
240 |
|
2025-08-18 |
|
| 227-281
| 4 |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2026-03-02 |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >>
Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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