RIO VISTA prefixes in area code 707
NANPA records 5 assigned NXX blocks to rate center RIO VISTA in area code 707, 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 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA (2), LEVEL 3 TELECOM OF CALIFORNIA, LP - CA (1), IP HORIZON LLC (1). The earliest assignment on record here is 2010-07-20 and the most recent 2023-05-03. 5 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 817 – 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 |
|---|---|---|---|---|
| 707-374 | Frontier CITIZENS TELECOM CA. DBA FRONTIER COM OF CA | – | yes | yes |
| 707-375 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 707-378 | Frontier CITIZENS TELECOM CA. DBA FRONTIER COM OF CA | 2010-07-20 | yes | yes |
| 707-507 | IP HORIZON LLC | – | yes | yes |
| 707-960 | Dish BOOST SUBSCRIBERCO L.L.C. | 2023-05-03 | 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 |
|---|---|---|---|
| CITIZENS TELECOM CA. DBA FRONTIER COM OF CA | Frontier | 2 | 40% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 20% |
| IP HORIZON LLC | – | 1 | 20% |
| BOOST SUBSCRIBERCO L.L.C. | Dish | 1 | 20% |
Frequently asked
Which prefixes belong to RIO VISTA in area code 707?
5 blocks: 374, 375, 378, 507, 960. The table above gives the holder of each.
Which carriers have numbers in RIO VISTA?
CITIZENS TELECOM CA. DBA FRONTIER COM OF CA (2 blocks), LEVEL 3 TELECOM OF CALIFORNIA, LP - CA (1 block), IP HORIZON LLC (1 block), BOOST SUBSCRIBERCO L.L.C. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is RIO VISTA 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.