DIAMONDBAR prefixes in area code 909
NANPA records 28 assigned NXX blocks to rate center DIAMONDBAR in area code 909, 3.6% of the 786 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 FRONTIER CALIFORNIA INC. (12), BANDWIDTH.COM CLEC, LLC - CA (3), ONVOY, LLC - CA (2). The earliest assignment on record here is 2009-03-27 and the most recent 2020-10-19. 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 code 840 – 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 |
|---|---|---|---|---|
| 909-274 | Charter CHARTER IP ENABLED SERVICES, LLC | 2009-03-27 | yes | yes |
| 909-323 | Onvoy ONVOY, LLC - CA | 2016-05-11 | yes | yes |
| 909-345 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2012-07-23 | yes | yes |
| 909-348 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 909-378 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 2013-07-31 | yes | yes |
| 909-396 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-444 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-468 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-551 | Charter TWC IP ENABLED SERVICES, LLC | 2014-10-20 | yes | yes |
| 909-569 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 909-594 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-595 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-598 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-610 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | – | yes | yes |
| 909-612 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-616 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2018-09-25 | yes | yes |
| 909-655 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2015-06-23 | yes | yes |
| 909-718 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 909-760 | Onvoy ONVOY, LLC - CA | 2016-10-10 | yes | yes |
| 909-839 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-859 | AT&T PACIFIC BELL (COMPETITIVE) | – | yes | yes |
| 909-860 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-861 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-869 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-895 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 909-914 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2020-10-19 | yes | yes |
| 909-978 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 909-979 | Frontier FRONTIER CALIFORNIA 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 |
|---|---|---|---|
| FRONTIER CALIFORNIA INC. | Frontier | 12 | 42.9% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 3 | 10.7% |
| ONVOY, LLC - CA | Onvoy | 2 | 7.1% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 2 | 7.1% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 2 | 7.1% |
| CHARTER IP ENABLED SERVICES, LLC | Charter | 1 | 3.6% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 3.6% |
| TWC IP ENABLED SERVICES, LLC | Charter | 1 | 3.6% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 1 | 3.6% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 1 | 3.6% |
| PACIFIC BELL (COMPETITIVE) | AT&T | 1 | 3.6% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 1 | 3.6% |
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 DIAMONDBAR in area code 909?
28 blocks: 274, 323, 345, 348, 378, 396, 444, 468, 551, 569, 594, 595 and 16 more, all listed in the table above.
Which carriers have numbers in DIAMONDBAR?
FRONTIER CALIFORNIA INC. (12 blocks), BANDWIDTH.COM CLEC, LLC - CA (3 blocks), ONVOY, LLC - CA (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (2 blocks), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (2 blocks), CHARTER IP ENABLED SERVICES, 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 DIAMONDBAR 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.