TIVYVALLEY prefixes in area code 559
NANPA records 5 assigned NXX blocks to rate center TIVYVALLEY in area code 559, 0.6% 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. 4 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC (2), LEVEL 3 COMMUNICATIONS, LLC - CA (1), FRONTIER CALIFORNIA INC. (1). The earliest assignment on record here is 2020-07-10 and the most recent 2025-06-05. 5 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 |
|---|---|---|---|---|
| 559-531 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 559-618 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 559-787 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 559-955 | FRACTEL, LLC | 2020-07-10 | yes | yes |
| 559-957 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2025-06-05 | 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 |
|---|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 2 | 40% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 1 | 20% |
| FRONTIER CALIFORNIA INC. | Frontier | 1 | 20% |
| FRACTEL, LLC | – | 1 | 20% |
Frequently asked
Which prefixes belong to TIVYVALLEY in area code 559?
5 blocks: 531, 618, 787, 955, 957. The table above gives the holder of each.
Which carriers have numbers in TIVYVALLEY?
NEW CINGULAR WIRELESS PCS, LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (1 block), FRONTIER CALIFORNIA INC. (1 block), FRACTEL, 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 TIVYVALLEY 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.