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

THOUSAOAKS prefixes in area code 805

NANPA records 64 assigned NXX blocks to rate center THOUSAOAKS in area code 805, 8.1% 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. 17 holders hold those blocks, the largest being FRONTIER CALIFORNIA INC. (17), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (14), T-MOBILE USA, INC. (9). The earliest assignment on record here is 2001-04-18 and the most recent 2009-01-05. 29 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.

64 assigned blocks – 8.1% of 805
17 holders of record
29 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
805-208 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-217 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-230 Frontier FRONTIER CALIFORNIA INC. – no yes
805-231 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-267 Windstream PAETEC ITEL, LLC – yes yes
805-277 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
805-279 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-300 T-Mobile T-MOBILE USA, INC. 2001-12-28 yes yes
805-309 Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2009-01-05 yes yes
805-313 Comcast COMCAST PHONE OF CALIFORNIA, LLC – no yes
805-338 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-04-18 no yes
805-341 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-04-18 no yes
805-353 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
805-358 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-04-18 no yes
805-367 AT&T AT&T - LOCAL – yes yes
805-368 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-370 Frontier FRONTIER CALIFORNIA INC. – no yes
805-371 Frontier FRONTIER CALIFORNIA INC. – no yes
805-372 Frontier FRONTIER CALIFORNIA INC. – yes yes
805-373 Frontier FRONTIER CALIFORNIA INC. – no yes
805-374 Frontier FRONTIER CALIFORNIA INC. – no yes
805-379 Frontier FRONTIER CALIFORNIA INC. – no yes
805-381 Frontier FRONTIER CALIFORNIA INC. – yes yes
805-390 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-405 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
805-409 T-Mobile T-MOBILE USA, INC. 2001-04-19 yes yes
805-413 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
805-418 AT&T PACIFIC BELL (COMPETITIVE) – yes yes
805-432 T-Mobile METROPCS NETWORKS, LLC – yes yes
805-435 UTILITY TELECOM GROUP, LLC - CA – no yes
805-442 Spok SPOK, INC. – no yes
805-446 Frontier FRONTIER CALIFORNIA INC. – no yes
805-449 Frontier FRONTIER CALIFORNIA INC. – no yes
805-494 Frontier FRONTIER CALIFORNIA INC. – yes yes
805-495 Frontier FRONTIER CALIFORNIA INC. – no yes
805-496 Frontier FRONTIER CALIFORNIA INC. – no yes
805-497 Frontier FRONTIER CALIFORNIA INC. – no yes
805-506 T-Mobile T-MOBILE USA, INC. – yes yes
805-551 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-557 Frontier FRONTIER CALIFORNIA INC. – yes yes
805-558 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-601 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
805-630 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-657 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-660 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-719 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
805-728 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
805-731 33 WIRELESS INC. – no yes
805-732 T-Mobile T-MOBILE USA, INC. – yes yes
805-750 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-777 Frontier FRONTIER CALIFORNIA INC. – no yes
805-778 Frontier FRONTIER CALIFORNIA INC. – yes yes
805-795 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-796 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
805-807 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
805-852 Onvoy ONVOY, LLC - CA – yes yes
805-857 T-Mobile T-MOBILE USA, INC. – yes yes
805-870 Onvoy ONVOY, LLC - CA – yes yes
805-905 T-Mobile T-MOBILE USA, INC. – yes yes
805-906 T-Mobile T-MOBILE USA, INC. – yes yes
805-907 T-Mobile METROPCS NETWORKS, LLC – yes yes
805-908 T-Mobile T-MOBILE USA, INC. – yes yes
805-917 Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA – yes yes
805-953 T-Mobile T-MOBILE USA, 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

HolderBrandBlocksShare here
FRONTIER CALIFORNIA INC. Frontier 17 26.6%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 14 21.9%
T-MOBILE USA, INC. T-Mobile 9 14.1%
NEW CINGULAR WIRELESS PCS, LLC AT&T 5 7.8%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 3 4.7%
PEERLESS NETWORK OF CALIFORNIA, LLC - CA Peerless 2 3.1%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 2 3.1%
METROPCS NETWORKS, LLC T-Mobile 2 3.1%
ONVOY, LLC - CA Onvoy 2 3.1%
PAETEC ITEL, LLC Windstream 1 1.6%
COMCAST PHONE OF CALIFORNIA, LLC Comcast 1 1.6%
AMERICAN MESSAGING SERVICES, LLC American Messaging 1 1.6%
AT&T - LOCAL AT&T 1 1.6%
PACIFIC BELL (COMPETITIVE) AT&T 1 1.6%
UTILITY TELECOM GROUP, LLC - CA – 1 1.6%
SPOK, INC. Spok 1 1.6%
33 WIRELESS INC. – 1 1.6%

Frequently asked

Which prefixes belong to THOUSAOAKS in area code 805?

64 blocks: 208, 217, 230, 231, 267, 277, 279, 300, 309, 313, 338, 341 and 52 more, all listed in the table above.

Which carriers have numbers in THOUSAOAKS?

FRONTIER CALIFORNIA INC. (17 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (14 blocks), T-MOBILE USA, INC. (9 blocks), NEW CINGULAR WIRELESS PCS, LLC (5 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (3 blocks), PEERLESS NETWORK OF CALIFORNIA, LLC - CA (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is THOUSAOAKS 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