FRNK MAIN prefixes in area code 510
NANPA records 81 assigned NXX blocks to rate center FRNK MAIN in area code 510, 10.3% of the 785 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. 18 holders hold those blocks, the largest being PACIFIC BELL (20), NEW CINGULAR WIRELESS PCS, LLC (15), T-MOBILE USA, INC. (9). The earliest assignment on record here is 2001-05-17 and the most recent 2024-09-12. 54 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 code 341 – 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 |
|---|---|---|---|---|
| 510-203 | T-Mobile T-MOBILE USA, INC. | 2015-09-22 | yes | yes |
| 510-248 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 510-284 | AT&T PACIFIC BELL | – | yes | yes |
| 510-298 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2012-12-07 | yes | yes |
| 510-299 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 510-304 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 510-320 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2013-09-12 | yes | yes |
| 510-335 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 510-358 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2011-07-08 | yes | yes |
| 510-364 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-11-28 | no | yes |
| 510-366 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 510-371 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2008-08-07 | yes | yes |
| 510-376 | T-Mobile METROPCS, INC. | – | yes | yes |
| 510-377 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 510-378 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 510-386 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 510-391 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2023-12-21 | yes | yes |
| 510-396 | T-Mobile T-MOBILE USA, INC. | 2001-12-26 | no | yes |
| 510-399 | Onvoy ONVOY, LLC - CA | 2016-05-06 | yes | yes |
| 510-402 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | – | yes | yes |
| 510-405 | Onvoy ONVOY, LLC - CA | – | no | yes |
| 510-443 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 2009-02-14 | yes | yes |
| 510-449 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 510-453 | T-Mobile METROPCS, INC. | – | yes | yes |
| 510-456 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 510-458 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2014-10-14 | yes | yes |
| 510-468 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 510-493 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 510-494 | AT&T PACIFIC BELL | – | no | yes |
| 510-505 | AT&T PACIFIC BELL | – | yes | yes |
| 510-509 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2010-07-06 | yes | yes |
| 510-510 | SHELCOMM | 2024-09-12 | no | yes |
| 510-513 | T-Mobile T-MOBILE USA, INC. | 2016-08-30 | yes | yes |
| 510-516 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2010-09-03 | yes | yes |
| 510-518 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | – | yes | yes |
| 510-552 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2001-06-25 | yes | yes |
| 510-556 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2014-05-05 | yes | yes |
| 510-557 | T-Mobile T-MOBILE USA, INC. | 2001-05-17 | yes | yes |
| 510-565 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 510-574 | AT&T PACIFIC BELL | – | yes | yes |
| 510-578 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 510-579 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 510-585 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 510-591 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2024-02-20 | yes | yes |
| 510-598 | T-Mobile T-MOBILE USA, INC. | 2013-01-18 | yes | yes |
| 510-602 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2017-04-04 | yes | yes |
| 510-608 | AT&T PACIFIC BELL | – | yes | yes |
| 510-648 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 510-673 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 510-676 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2002-06-14 | no | yes |
| 510-709 | IP HORIZON LLC | – | yes | yes |
| 510-713 | AT&T PACIFIC BELL | – | no | yes |
| 510-714 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 510-737 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2015-11-13 | yes | yes |
| 510-739 | AT&T PACIFIC BELL | – | yes | yes |
| 510-742 | AT&T PACIFIC BELL | – | no | yes |
| 510-744 | AT&T PACIFIC BELL | – | yes | yes |
| 510-745 | AT&T PACIFIC BELL | – | yes | yes |
| 510-766 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2015-03-25 | yes | yes |
| 510-767 | T-Mobile T-MOBILE USA, INC. | 2019-11-08 | yes | yes |
| 510-789 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | – | yes | yes |
| 510-790 | AT&T PACIFIC BELL | – | no | yes |
| 510-791 | AT&T PACIFIC BELL | – | no | yes |
| 510-792 | AT&T PACIFIC BELL | – | no | yes |
| 510-793 | AT&T PACIFIC BELL | – | no | yes |
| 510-794 | AT&T PACIFIC BELL | – | no | yes |
| 510-795 | AT&T PACIFIC BELL | – | no | yes |
| 510-796 | AT&T PACIFIC BELL | – | no | yes |
| 510-797 | AT&T PACIFIC BELL | – | no | yes |
| 510-818 | AT&T PACIFIC BELL | – | no | yes |
| 510-857 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 510-894 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | – | yes | yes |
| 510-896 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 510-902 | Onvoy ONVOY, LLC - CA | 2018-12-03 | yes | yes |
| 510-936 | AT&T PACIFIC BELL | – | yes | yes |
| 510-938 | T-Mobile METROPCS, INC. | 2001-09-21 | no | yes |
| 510-943 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 510-953 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 510-968 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 510-980 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2019-06-10 | yes | yes |
| 510-996 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | 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 |
|---|---|---|---|
| PACIFIC BELL | AT&T | 20 | 24.7% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 15 | 18.5% |
| T-MOBILE USA, INC. | T-Mobile | 9 | 11.1% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 7 | 8.6% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 5 | 6.2% |
| ONVOY, LLC - CA | Onvoy | 4 | 4.9% |
| METROPCS, INC. | T-Mobile | 3 | 3.7% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 3 | 3.7% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 3 | 3.7% |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | Peerless | 2 | 2.5% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 2 | 2.5% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 2 | 2.5% |
| SHELCOMM | – | 1 | 1.2% |
| IP HORIZON LLC | – | 1 | 1.2% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 1 | 1.2% |
| COMCAST PHONE OF CALIFORNIA, LLC | Comcast | 1 | 1.2% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 1.2% |
| AMERICAN MESSAGING SERVICES, LLC | American Messaging | 1 | 1.2% |
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 FRNK MAIN in area code 510?
81 blocks: 203, 248, 284, 298, 299, 304, 320, 335, 358, 364, 366, 371 and 69 more, all listed in the table above.
Which carriers have numbers in FRNK MAIN?
PACIFIC BELL (20 blocks), NEW CINGULAR WIRELESS PCS, LLC (15 blocks), T-MOBILE USA, INC. (9 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (7 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (5 blocks), ONVOY, LLC - CA (4 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is FRNK MAIN 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.