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

POWAY prefixes in area code 858

NANPA records 45 assigned NXX blocks to rate center POWAY in area code 858, 8.0% of the 564 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 T-MOBILE USA, INC. (9), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (7), PACIFIC BELL (7). The earliest assignment on record here is 2001-05-17 and the most recent 2024-06-17. 31 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 619 – overlay codes cover the same geography, so a rate center is served by all of them.

45 assigned blocks – 8% of 858
17 holders of record
31 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
858-204 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
858-206 Onvoy ONVOY, LLC - CA 2006-11-21 yes yes
858-208 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
858-212 T-Mobile T-MOBILE USA, INC. – yes yes
858-213 T-Mobile T-MOBILE USA, INC. – yes yes
858-218 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
858-231 T-Mobile T-MOBILE USA, INC. 2001-12-14 no yes
858-236 NORTH COUNTY COMMUNICATION CORPORATION - CA – no yes
858-243 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2001-05-17 yes yes
858-248 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2001-10-18 yes yes
858-254 T-Mobile T-MOBILE USA, INC. – yes yes
858-269 AT&T PACIFIC BELL 2018-10-03 yes yes
858-335 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
858-375 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
858-377 FRACTEL, LLC 2021-07-13 yes yes
858-382 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
858-386 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
858-391 AT&T PACIFIC BELL – yes yes
858-395 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
858-403 AT&T NEW CINGULAR WIRELESS PCS, LLC 2024-06-17 yes yes
858-413 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
858-435 Windstream PAETEC ITEL, LLC – yes yes
858-442 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
858-449 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
858-486 AT&T PACIFIC BELL – no yes
858-513 AT&T PACIFIC BELL – no yes
858-602 T-Mobile T-MOBILE USA, INC. 2002-04-01 yes yes
858-648 EXIANT COMMUNICATIONS LLC 2018-02-23 yes yes
858-663 T-Mobile T-MOBILE USA, INC. – yes yes
858-668 AT&T PACIFIC BELL – yes yes
858-679 AT&T PACIFIC BELL – no yes
858-682 T-Mobile T-MOBILE USA, INC. – yes yes
858-687 TON80 COMMUNICATIONS, LLC 2022-01-19 yes yes
858-722 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
858-726 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
858-735 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
858-746 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
858-748 AT&T PACIFIC BELL – no yes
858-762 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
858-829 T-Mobile T-MOBILE USA, INC. – yes yes
858-842 Comcast COMCAST PHONE OF CALIFORNIA, LLC – yes yes
858-848 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
858-859 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
858-883 T-Mobile T-MOBILE USA, INC. – yes yes
858-956 MATRIX TELECOM, LLC. S/I/I TNCI - CA – 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
T-MOBILE USA, INC. T-Mobile 9 20%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 7 15.6%
PACIFIC BELL AT&T 7 15.6%
NEW CINGULAR WIRELESS PCS, LLC AT&T 5 11.1%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 2 4.4%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 2 4.4%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 2 4.4%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA Verizon 2 4.4%
ONVOY, LLC - CA Onvoy 1 2.2%
NORTH COUNTY COMMUNICATION CORPORATION - CA – 1 2.2%
FRACTEL, LLC – 1 2.2%
PAETEC ITEL, LLC Windstream 1 2.2%
EXIANT COMMUNICATIONS LLC – 1 2.2%
TON80 COMMUNICATIONS, LLC – 1 2.2%
COMCAST PHONE OF CALIFORNIA, LLC Comcast 1 2.2%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 2.2%
MATRIX TELECOM, LLC. S/I/I TNCI - CA – 1 2.2%

Frequently asked

Which prefixes belong to POWAY in area code 858?

45 blocks: 204, 206, 208, 212, 213, 218, 231, 236, 243, 248, 254, 269 and 33 more, all listed in the table above.

Which carriers have numbers in POWAY?

T-MOBILE USA, INC. (9 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (7 blocks), PACIFIC BELL (7 blocks), NEW CINGULAR WIRELESS PCS, LLC (5 blocks), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (2 blocks), LEVEL 3 COMMUNICATIONS, 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 POWAY 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 858

All 564 prefixes in 858