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

IGNACIO prefixes in area code 628

NANPA records 6 assigned NXX blocks to rate center IGNACIO in area code 628, 3.1% of the 193 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. 5 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC (2), PEERLESS NETWORK OF CALIFORNIA, LLC - CA (1), FRACTEL, LLC (1). The earliest assignment on record here is 2017-10-26 and the most recent 2024-06-12. 6 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 415, 748, 970 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 3.1% of 628
5 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
628-238 Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA – yes yes
628-259 AT&T NEW CINGULAR WIRELESS PCS, LLC 2017-10-26 yes yes
628-307 AT&T NEW CINGULAR WIRELESS PCS, LLC 2024-06-12 yes yes
628-377 FRACTEL, LLC 2021-07-15 yes yes
628-433 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2019-03-11 yes yes
628-666 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
NEW CINGULAR WIRELESS PCS, LLC AT&T 2 33.3%
PEERLESS NETWORK OF CALIFORNIA, LLC - CA Peerless 1 16.7%
FRACTEL, LLC – 1 16.7%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 16.7%
ONVOY, LLC - CA Onvoy 1 16.7%

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 IGNACIO in area code 628?

6 blocks: 238, 259, 307, 377, 433, 666. The table above gives the holder of each.

Which carriers have numbers in IGNACIO?

NEW CINGULAR WIRELESS PCS, LLC (2 blocks), PEERLESS NETWORK OF CALIFORNIA, LLC - CA (1 block), FRACTEL, LLC (1 block), BANDWIDTH.COM CLEC, LLC - CA (1 block), ONVOY, 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 IGNACIO 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 628

All 193 prefixes in 628