DINUBA prefixes in area code 559
NANPA records 13 assigned NXX blocks to rate center DINUBA in area code 559, 1.7% 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. 6 holders hold those blocks, the largest being PACIFIC BELL (4), ONVOY, LLC - CA (3), LEVEL 3 COMMUNICATIONS, LLC - CA (2). The earliest assignment on record here is 2001-08-22 and the most recent 2026-05-08. 12 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 559-315 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 559-397 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2001-11-29 | yes | yes |
| 559-406 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 559-528 | AT&T PACIFIC BELL | – | yes | yes |
| 559-590 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 559-591 | AT&T PACIFIC BELL | – | no | yes |
| 559-595 | AT&T PACIFIC BELL | – | yes | yes |
| 559-596 | AT&T PACIFIC BELL | – | yes | yes |
| 559-607 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2021-11-01 | yes | yes |
| 559-648 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 559-725 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2001-08-22 | yes | yes |
| 559-845 | Onvoy ONVOY, LLC - CA | 2022-11-17 | yes | yes |
| 559-983 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2026-05-08 | 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 | 4 | 30.8% |
| ONVOY, LLC - CA | Onvoy | 3 | 23.1% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 2 | 15.4% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 2 | 15.4% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 1 | 7.7% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 7.7% |
Frequently asked
Which prefixes belong to DINUBA in area code 559?
13 blocks: 315, 397, 406, 528, 590, 591, 595, 596, 607, 648, 725, 845 and 1 more, all listed in the table above.
Which carriers have numbers in DINUBA?
PACIFIC BELL (4 blocks), ONVOY, LLC - CA (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (2 blocks), BANDWIDTH.COM CLEC, LLC - CA (2 blocks), NEW CINGULAR WIRELESS PCS, LLC (1 block), LEVEL 3 TELECOM OF CALIFORNIA, LP - CA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is DINUBA 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.