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

UKIAH prefixes in area code 707

NANPA records 22 assigned NXX blocks to rate center UKIAH in area code 707, 2.8% 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. 10 holders hold those blocks, the largest being PACIFIC BELL (6), UNITED STATES CELLULAR - CA (4), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (3). The earliest assignment on record here is 2001-07-10 and the most recent 2022-06-08. 16 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 codes 369, 541 – overlay codes cover the same geography, so a rate center is served by all of them.

22 assigned blocks – 2.8% of 707
10 holders of record
16 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
707-234 UNITED STATES CELLULAR - CA – yes yes
707-272 UNITED STATES CELLULAR - CA – yes yes
707-313 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
707-367 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
707-376 Onvoy ONVOY, LLC - CA – yes yes
707-380 AT&T NEW CINGULAR WIRELESS PCS, LLC 2012-12-04 yes yes
707-391 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-07-10 no yes
707-462 AT&T PACIFIC BELL – no yes
707-463 AT&T PACIFIC BELL – no yes
707-466 Onvoy ONVOY, LLC - CA – no yes
707-467 AT&T PACIFIC BELL – yes yes
707-468 AT&T PACIFIC BELL – no yes
707-472 AT&T PACIFIC BELL – yes yes
707-485 AT&T PACIFIC BELL – yes yes
707-489 UNITED STATES CELLULAR - CA – yes yes
707-513 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
707-621 UNITED STATES CELLULAR - CA – yes yes
707-671 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
707-714 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2015-04-27 yes yes
707-727 T-Mobile T-MOBILE USA, INC. 2020-01-13 yes yes
707-952 Comcast COMCAST PHONE OF CALIFORNIA, LLC 2022-06-08 yes yes
707-972 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – 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
PACIFIC BELL AT&T 6 27.3%
UNITED STATES CELLULAR - CA – 4 18.2%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 3 13.6%
ONVOY, LLC - CA Onvoy 2 9.1%
NEW CINGULAR WIRELESS PCS, LLC AT&T 2 9.1%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 4.5%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 4.5%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 4.5%
T-MOBILE USA, INC. T-Mobile 1 4.5%
COMCAST PHONE OF CALIFORNIA, LLC Comcast 1 4.5%

Frequently asked

Which prefixes belong to UKIAH in area code 707?

22 blocks: 234, 272, 313, 367, 376, 380, 391, 462, 463, 466, 467, 468 and 10 more, all listed in the table above.

Which carriers have numbers in UKIAH?

PACIFIC BELL (6 blocks), UNITED STATES CELLULAR - CA (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (3 blocks), ONVOY, LLC - CA (2 blocks), NEW CINGULAR WIRELESS PCS, LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - 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 UKIAH 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 707

All 785 prefixes in 707