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

EUREKA prefixes in area code 707

NANPA records 36 assigned NXX blocks to rate center EUREKA in area code 707, 4.6% 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. 14 holders hold those blocks, the largest being PACIFIC BELL (8), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (7), UNITED STATES CELLULAR - CA (5). The earliest assignment on record here is 2001-05-18 and the most recent 2026-07-30. 26 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 309, 369, 406, 435 – overlay codes cover the same geography, so a rate center is served by all of them.

36 assigned blocks – 4.6% of 707
14 holders of record
26 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
707-267 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
707-268 AT&T PACIFIC BELL – no yes
707-269 AT&T PACIFIC BELL – no yes
707-273 T-Mobile METROPCS, INC. 2011-02-21 yes yes
707-296 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2013-01-14 yes yes
707-298 Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2013-03-08 yes yes
707-362 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
707-382 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA 2011-08-09 yes yes
707-407 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – yes yes
707-440 Onvoy ONVOY, LLC - CA – yes yes
707-441 AT&T PACIFIC BELL – no yes
707-442 AT&T PACIFIC BELL – no yes
707-443 AT&T PACIFIC BELL – no yes
707-444 AT&T PACIFIC BELL – no yes
707-445 AT&T PACIFIC BELL – no yes
707-476 AT&T PACIFIC BELL – yes yes
707-496 UNITED STATES CELLULAR - CA – yes yes
707-497 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
707-498 UNITED STATES CELLULAR - CA – yes yes
707-499 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
707-502 UNITED STATES CELLULAR - CA – yes yes
707-572 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2015-01-30 yes yes
707-599 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
707-601 UNITED STATES CELLULAR - CA – yes yes
707-613 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2017-02-10 yes yes
707-616 T-Mobile METROPCS, INC. 2001-05-18 yes yes
707-618 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
707-672 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
707-683 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2015-11-13 yes yes
707-740 T-Mobile T-MOBILE USA, INC. 2018-12-24 yes yes
707-798 CSC VOICE, LLC 2013-11-04 yes yes
707-821 Onvoy ONVOY, LLC - CA 2026-07-30 yes no
707-832 T-Mobile METROPCS, INC. – yes yes
707-834 UNITED STATES CELLULAR - CA – yes yes
707-845 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-05-18 no yes
707-854 T-Mobile T-MOBILE USA, INC. 2020-10-19 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
PACIFIC BELL AT&T 8 22.2%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 7 19.4%
UNITED STATES CELLULAR - CA – 5 13.9%
METROPCS, INC. T-Mobile 3 8.3%
NEW CINGULAR WIRELESS PCS, LLC AT&T 2 5.6%
ONVOY, LLC - CA Onvoy 2 5.6%
T-MOBILE USA, INC. T-Mobile 2 5.6%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 2.8%
PEERLESS NETWORK OF CALIFORNIA, LLC - CA Peerless 1 2.8%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 2.8%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 2.8%
AMERICAN MESSAGING SERVICES, LLC American Messaging 1 2.8%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 2.8%
CSC VOICE, LLC – 1 2.8%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to EUREKA in area code 707?

36 blocks: 267, 268, 269, 273, 296, 298, 362, 382, 407, 440, 441, 442 and 24 more, all listed in the table above.

Which carriers have numbers in EUREKA?

PACIFIC BELL (8 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (7 blocks), UNITED STATES CELLULAR - CA (5 blocks), METROPCS, INC. (3 blocks), NEW CINGULAR WIRELESS PCS, LLC (2 blocks), ONVOY, 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 EUREKA 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