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

SNDG SNDG prefixes in area code 858

NANPA records 23 assigned NXX blocks to rate center SNDG SNDG in area code 858, 4.1% 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. 13 holders hold those blocks, the largest being FRACTEL, LLC (8), NUSO, LLC (2), HD CARRIER LLC (2). The earliest assignment on record here is 2018-12-19 and the most recent 2026-05-20. 22 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 619, 760 – overlay codes cover the same geography, so a rate center is served by all of them.

23 assigned blocks – 4.1% of 858
13 holders of record
22 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
858-321 Windstream PAETEC ITEL, LLC 2022-06-30 yes yes
858-327 NUSO, LLC – yes yes
858-351 HD CARRIER LLC 2022-10-20 yes yes
858-355 FRACTEL, LLC 2021-09-22 yes yes
858-383 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA 2023-08-22 yes yes
858-415 T-Mobile T-MOBILE USA, INC. 2024-09-19 yes yes
858-418 AT&T NEW CINGULAR WIRELESS PCS, LLC 2024-11-13 yes yes
858-419 NUSO, LLC 2024-11-13 yes yes
858-423 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2025-01-24 yes yes
858-425 Charter ONVOY SPECTRUM, LLC 2025-01-28 yes yes
858-446 SHELCOMM 2026-05-13 no yes
858-477 FRACTEL, LLC 2021-06-04 yes yes
858-600 EXIANT COMMUNICATIONS LLC 2026-03-10 yes yes
858-727 TON80 COMMUNICATIONS, LLC 2020-11-11 yes yes
858-744 FRACTEL, LLC 2021-04-23 yes yes
858-789 FRACTEL, LLC 2021-01-04 yes yes
858-828 FRACTEL, LLC 2022-02-18 yes yes
858-833 FRACTEL, LLC 2020-09-17 yes yes
858-858 Charter ONVOY SPECTRUM, LLC 2023-05-22 yes yes
858-867 FRACTEL, LLC 2020-07-10 yes yes
858-868 HD CARRIER LLC 2018-12-19 yes yes
858-881 8x8 8X8, INC. 2026-05-20 yes yes
858-988 FRACTEL, LLC 2019-03-19 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
FRACTEL, LLC – 8 34.8%
NUSO, LLC – 2 8.7%
HD CARRIER LLC – 2 8.7%
ONVOY SPECTRUM, LLC Charter 2 8.7%
PAETEC ITEL, LLC Windstream 1 4.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 4.3%
T-MOBILE USA, INC. T-Mobile 1 4.3%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 4.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 1 4.3%
SHELCOMM – 1 4.3%
EXIANT COMMUNICATIONS LLC – 1 4.3%
TON80 COMMUNICATIONS, LLC – 1 4.3%
8X8, INC. 8x8 1 4.3%

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 SNDG SNDG in area code 858?

23 blocks: 321, 327, 351, 355, 383, 415, 418, 419, 423, 425, 446, 477 and 11 more, all listed in the table above.

Which carriers have numbers in SNDG SNDG?

FRACTEL, LLC (8 blocks), NUSO, LLC (2 blocks), HD CARRIER LLC (2 blocks), ONVOY SPECTRUM, LLC (2 blocks), PAETEC ITEL, LLC (1 block), TELEPORT COMMUNICATIONS AMERICA, 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 SNDG SNDG 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