FREDERICK prefixes in area code 301
NANPA records 37 assigned NXX blocks to rate center FREDERICK in area code 301, 4.7% of the 784 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 8 holders hold those blocks, the largest being VERIZON MARYLAND, INC. (21), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (5), METROPCS, INC. (3). The earliest assignment on record here is 2002-11-20 and the most recent 2018-11-27. 19 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 227, 240, 580, 605 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 301-228 | Verizon VERIZON MARYLAND, INC. | – | yes | yes |
| 301-305 | T-Mobile METROPCS, INC. | – | yes | yes |
| 301-360 | Verizon VERIZON MARYLAND, INC. | – | yes | yes |
| 301-378 | Comcast COMCAST IP PHONE, LLC | 2007-02-20 | yes | yes |
| 301-401 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | – | no | yes |
| 301-418 | Verizon VERIZON MARYLAND, INC. | 2002-11-20 | yes | yes |
| 301-471 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | – | no | yes |
| 301-473 | Verizon VERIZON MARYLAND, INC. | – | yes | yes |
| 301-514 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | – | no | yes |
| 301-524 | T-Mobile OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | – | yes | yes |
| 301-600 | Verizon VERIZON MARYLAND, INC. | 2006-07-06 | yes | yes |
| 301-606 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | – | no | yes |
| 301-619 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-620 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-624 | Verizon VERIZON MARYLAND, INC. | – | yes | yes |
| 301-631 | Verizon VERIZON MARYLAND, INC. | – | yes | yes |
| 301-639 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | – | no | yes |
| 301-644 | Verizon VERIZON MARYLAND, INC. | – | yes | yes |
| 301-662 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-663 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-668 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-673 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | – | yes | yes |
| 301-676 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | – | no | yes |
| 301-682 | Verizon VERIZON MARYLAND, INC. | – | yes | yes |
| 301-693 | T-Mobile OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | – | no | yes |
| 301-694 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-695 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-696 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-698 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-712 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | – | yes | yes |
| 301-732 | T-Mobile METROPCS, INC. | – | yes | yes |
| 301-748 | T-Mobile METROPCS, INC. | – | yes | yes |
| 301-788 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | – | no | yes |
| 301-815 | Verizon VERIZON MARYLAND, INC. | – | no | yes |
| 301-835 | Vonage VONAGE AMERICA LLC | 2018-11-27 | yes | yes |
| 301-846 | Verizon VERIZON MARYLAND, INC. | – | yes | yes |
| 301-898 | Verizon VERIZON MARYLAND, INC. | – | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| VERIZON MARYLAND, INC. | Verizon | 21 | 56.8% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | Verizon | 5 | 13.5% |
| METROPCS, INC. | T-Mobile | 3 | 8.1% |
| NEW CINGULAR WIRELESS PCS, LLC - DC | AT&T | 3 | 8.1% |
| OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | T-Mobile | 2 | 5.4% |
| COMCAST IP PHONE, LLC | Comcast | 1 | 2.7% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Verizon | 1 | 2.7% |
| VONAGE AMERICA LLC | Vonage | 1 | 2.7% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to FREDERICK in area code 301?
37 blocks: 228, 305, 360, 378, 401, 418, 471, 473, 514, 524, 600, 606 and 25 more, all listed in the table above.
Which carriers have numbers in FREDERICK?
VERIZON MARYLAND, INC. (21 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (5 blocks), METROPCS, INC. (3 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (3 blocks), OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (2 blocks), COMCAST IP PHONE, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is FREDERICK a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.