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

SNDG LVTA prefixes in area code 858

NANPA records 80 assigned NXX blocks to rate center SNDG LVTA in area code 858, 14.2% 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. 20 holders hold those blocks, the largest being PACIFIC BELL (36), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (6), COMCAST PHONE OF CALIFORNIA, LLC (5). The earliest assignment on record here is 2001-09-24 and the most recent 2024-11-21. 56 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.

80 assigned blocks – 14.2% of 858
20 holders of record
56 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
858-219 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
858-221 Onvoy ONVOY, LLC - CA – yes yes
858-223 Onvoy ONVOY, LLC - CA 2013-06-10 yes yes
858-244 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
858-256 Comcast COMCAST PHONE OF CALIFORNIA, LLC – yes yes
858-262 T-Mobile T-MOBILE USA, INC. 2015-03-11 yes yes
858-264 Onvoy ONVOY, LLC - CA 2014-11-24 yes yes
858-266 AT&T PACIFIC BELL 2013-11-08 yes yes
858-268 AT&T PACIFIC BELL – no yes
858-276 AT&T NEW CINGULAR WIRELESS PCS, LLC 2016-02-26 yes yes
858-277 AT&T PACIFIC BELL – no yes
858-278 AT&T PACIFIC BELL – no yes
858-279 AT&T PACIFIC BELL – no yes
858-285 Comcast COMCAST PHONE OF CALIFORNIA, LLC – yes yes
858-289 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-05-13 yes yes
858-292 AT&T PACIFIC BELL – no yes
858-296 Comcast COMCAST PHONE OF CALIFORNIA, LLC – yes yes
858-298 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-02-04 yes yes
858-300 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
858-302 Comcast COMCAST PHONE OF CALIFORNIA, LLC 2017-10-03 yes yes
858-308 T-Mobile T-MOBILE USA, INC. 2021-03-10 yes yes
858-309 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
858-325 Charter ONVOY SPECTRUM, LLC 2021-10-11 yes yes
858-380 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
858-384 WAVENATION, LLC – yes yes
858-392 COMMIO, LLC 2024-01-02 yes yes
858-394 FIVE9, INC. 2024-01-10 yes yes
858-420 AT&T NEW CINGULAR WIRELESS PCS, LLC 2024-11-21 yes yes
858-427 Windstream PAETEC ITEL, LLC – yes yes
858-429 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
858-430 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
858-467 AT&T PACIFIC BELL – no yes
858-492 AT&T PACIFIC BELL – yes yes
858-493 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
858-494 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
858-495 AT&T PACIFIC BELL – no yes
858-496 AT&T PACIFIC BELL – yes yes
858-499 AT&T PACIFIC BELL – yes yes
858-502 AT&T PACIFIC BELL – yes yes
858-503 AT&T PACIFIC BELL – yes yes
858-505 AT&T PACIFIC BELL – no yes
858-514 AT&T PACIFIC BELL – no yes
858-522 AT&T PACIFIC BELL – yes yes
858-541 AT&T PACIFIC BELL – yes yes
858-560 AT&T PACIFIC BELL – no yes
858-565 AT&T PACIFIC BELL – no yes
858-569 AT&T PACIFIC BELL – no yes
858-571 AT&T PACIFIC BELL – no yes
858-573 AT&T PACIFIC BELL – no yes
858-576 AT&T PACIFIC BELL – no yes
858-583 T-Mobile T-MOBILE USA, INC. 2001-09-24 yes yes
858-598 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
858-609 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
858-614 AT&T PACIFIC BELL – yes yes
858-616 AT&T PACIFIC BELL – yes yes
858-627 AT&T PACIFIC BELL – no yes
858-633 AT&T AT&T - LOCAL – yes yes
858-634 Comcast COMCAST PHONE OF CALIFORNIA, LLC – yes yes
858-636 AT&T PACIFIC BELL – yes yes
858-637 AT&T PACIFIC BELL – yes yes
858-650 AT&T PACIFIC BELL – yes yes
858-654 AT&T PACIFIC BELL – yes yes
858-667 FRACTEL, LLC 2020-11-09 yes yes
858-694 AT&T PACIFIC BELL – no yes
858-707 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
858-712 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – no yes
858-715 AT&T PACIFIC BELL – no yes
858-717 T-Mobile T-MOBILE USA, INC. 2002-08-30 yes yes
858-737 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
858-742 TON80 COMMUNICATIONS, LLC 2022-01-12 yes yes
858-751 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
858-769 MATRIX TELECOM, LLC. S/I/I TNCI - CA – yes yes
858-810 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
858-836 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
858-874 AT&T PACIFIC BELL – no yes
858-939 AT&T PACIFIC BELL – yes yes
858-944 FRACTEL, LLC 2021-07-13 yes yes
858-966 AT&T PACIFIC BELL – yes yes
858-974 AT&T PACIFIC BELL – no yes
858-987 Onvoy ONVOY, LLC - 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
PACIFIC BELL AT&T 36 45%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA Verizon 6 7.5%
COMCAST PHONE OF CALIFORNIA, LLC Comcast 5 6.2%
ONVOY, LLC - CA Onvoy 4 5%
T-MOBILE USA, INC. T-Mobile 4 5%
NEW CINGULAR WIRELESS PCS, LLC AT&T 4 5%
AMERICAN MESSAGING SERVICES, LLC American Messaging 3 3.8%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 3 3.8%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 2 2.5%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 2 2.5%
FRACTEL, LLC – 2 2.5%
ONVOY SPECTRUM, LLC Charter 1 1.2%
WAVENATION, LLC – 1 1.2%
COMMIO, LLC – 1 1.2%
FIVE9, INC. – 1 1.2%
PAETEC ITEL, LLC Windstream 1 1.2%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 1.2%
AT&T - LOCAL AT&T 1 1.2%
TON80 COMMUNICATIONS, LLC – 1 1.2%
MATRIX TELECOM, LLC. S/I/I TNCI - CA – 1 1.2%

Frequently asked

Which prefixes belong to SNDG LVTA in area code 858?

80 blocks: 219, 221, 223, 244, 256, 262, 264, 266, 268, 276, 277, 278 and 68 more, all listed in the table above.

Which carriers have numbers in SNDG LVTA?

PACIFIC BELL (36 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (6 blocks), COMCAST PHONE OF CALIFORNIA, LLC (5 blocks), ONVOY, LLC - CA (4 blocks), T-MOBILE USA, INC. (4 blocks), NEW CINGULAR WIRELESS PCS, LLC (4 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SNDG LVTA 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