NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

SANTAPAULA prefixes in area code 805

NANPA records 10 assigned NXX blocks to rate center SANTAPAULA in area code 805, 1.3% 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. 6 holders hold those blocks, the largest being FRONTIER CALIFORNIA INC. (4), ONVOY, LLC - CA (2), TWC IP ENABLED SERVICES, LLC (1). The earliest assignment on record here is 2012-11-02 and the most recent 2016-12-30. 8 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 820 – overlay codes cover the same geography, so a rate center is served by all of them.

10 assigned blocks – 1.3% of 805
6 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
805-229 Frontier FRONTIER CALIFORNIA INC. – yes yes
805-317 Onvoy ONVOY, LLC - CA – yes yes
805-392 Onvoy ONVOY, LLC - CA – yes yes
805-420 Charter TWC IP ENABLED SERVICES, LLC 2012-11-02 yes yes
805-421 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
805-525 Frontier FRONTIER CALIFORNIA INC. – no yes
805-749 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2015-06-23 yes yes
805-873 T-Mobile METROPCS NETWORKS, LLC 2016-12-30 yes yes
805-921 Frontier FRONTIER CALIFORNIA INC. – yes yes
805-933 Frontier FRONTIER CALIFORNIA INC. – no 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

HolderBrandBlocksShare here
FRONTIER CALIFORNIA INC. Frontier 4 40%
ONVOY, LLC - CA Onvoy 2 20%
TWC IP ENABLED SERVICES, LLC Charter 1 10%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 1 10%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 10%
METROPCS NETWORKS, LLC T-Mobile 1 10%

Frequently asked

Which prefixes belong to SANTAPAULA in area code 805?

10 blocks: 229, 317, 392, 420, 421, 525, 749, 873, 921, 933. The table above gives the holder of each.

Which carriers have numbers in SANTAPAULA?

FRONTIER CALIFORNIA INC. (4 blocks), ONVOY, LLC - CA (2 blocks), TWC IP ENABLED SERVICES, LLC (1 block), LEVEL 3 TELECOM OF CALIFORNIA, LP - CA (1 block), BANDWIDTH.COM CLEC, LLC - CA (1 block), METROPCS NETWORKS, 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 SANTAPAULA 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.

Other rate centers in 805

All 786 prefixes in 805