OKLD ALMD prefixes in area code 510
NANPA records 42 assigned NXX blocks to rate center OKLD ALMD in area code 510, 5.4% 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. 12 holders hold those blocks, the largest being PACIFIC BELL (12), METROPCS, INC. (5), LEVEL 3 COMMUNICATIONS, LLC - CA (5). The earliest assignment on record here is 2011-09-15 and the most recent 2024-05-31. 33 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 |
|---|---|---|---|---|
| 510-205 | T-Mobile METROPCS, INC. | – | yes | yes |
| 510-214 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | – | yes | yes |
| 510-217 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 510-227 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 510-239 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 510-254 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2011-09-15 | yes | yes |
| 510-263 | AT&T PACIFIC BELL | – | yes | yes |
| 510-306 | T-Mobile METROPCS, INC. | – | yes | yes |
| 510-337 | AT&T PACIFIC BELL | – | yes | yes |
| 510-355 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 510-373 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 510-473 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 510-519 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2017-08-07 | yes | yes |
| 510-521 | AT&T PACIFIC BELL | – | no | yes |
| 510-522 | AT&T PACIFIC BELL | – | no | yes |
| 510-523 | AT&T PACIFIC BELL | – | no | yes |
| 510-545 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 510-629 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 510-671 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2013-05-14 | yes | yes |
| 510-682 | T-Mobile METROPCS, INC. | – | yes | yes |
| 510-694 | Onvoy ONVOY, LLC - CA | 2014-12-08 | yes | yes |
| 510-747 | AT&T PACIFIC BELL | – | yes | yes |
| 510-748 | AT&T PACIFIC BELL | – | no | yes |
| 510-749 | AT&T PACIFIC BELL | – | no | yes |
| 510-764 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 510-769 | AT&T PACIFIC BELL | – | no | yes |
| 510-775 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2012-09-14 | yes | yes |
| 510-800 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 510-810 | T-Mobile T-MOBILE USA, INC. | 2024-05-31 | yes | yes |
| 510-814 | AT&T PACIFIC BELL | – | no | yes |
| 510-846 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 510-863 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 510-864 | AT&T PACIFIC BELL | – | no | yes |
| 510-865 | AT&T PACIFIC BELL | – | no | yes |
| 510-871 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2014-07-28 | yes | yes |
| 510-872 | T-Mobile METROPCS, INC. | – | yes | yes |
| 510-905 | T-Mobile METROPCS, INC. | 2018-09-17 | yes | yes |
| 510-906 | Onvoy ONVOY, LLC - CA | 2016-07-15 | yes | yes |
| 510-956 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2019-01-17 | yes | yes |
| 510-975 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2019-01-22 | yes | yes |
| 510-978 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 510-995 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | 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 | 12 | 28.6% |
| METROPCS, INC. | T-Mobile | 5 | 11.9% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 5 | 11.9% |
| ONVOY, LLC - CA | Onvoy | 4 | 9.5% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 4 | 9.5% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 3 | 7.1% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 3 | 7.1% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 2 | 4.8% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 1 | 2.4% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 1 | 2.4% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 2.4% |
| T-MOBILE USA, INC. | T-Mobile | 1 | 2.4% |
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 OKLD ALMD in area code 510?
42 blocks: 205, 214, 217, 227, 239, 254, 263, 306, 337, 355, 373, 473 and 30 more, all listed in the table above.
Which carriers have numbers in OKLD ALMD?
PACIFIC BELL (12 blocks), METROPCS, INC. (5 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (5 blocks), ONVOY, LLC - CA (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (4 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is OKLD ALMD 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.