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

CENTRALIA prefixes in area code 618

NANPA records 24 assigned NXX blocks to rate center CENTRALIA in area code 618, 3.1% of the 786 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 - IL (13), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (5), ILLINOIS BELL TEL CO (4). The earliest assignment on record here is 2021-05-04 and the most recent 2023-07-18. 15 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 360, 564, 573, 730 – overlay codes cover the same geography, so a rate center is served by all of them.

24 assigned blocks – 3.1% of 618
5 holders of record
15 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
618-231 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
618-237 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
618-267 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
618-292 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
618-322 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
618-335 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
618-339 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
618-352 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
618-359 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
618-367 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – yes yes
618-436 AT&T ILLINOIS BELL TEL CO – yes yes
618-532 AT&T ILLINOIS BELL TEL CO – no yes
618-533 AT&T ILLINOIS BELL TEL CO – no yes
618-545 AT&T ILLINOIS BELL TEL CO – yes yes
618-597 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
618-682 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2021-05-04 yes yes
618-760 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2021-07-29 yes yes
618-780 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
618-813 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2021-11-30 yes yes
618-848 Onvoy ONVOY, LLC 2022-05-09 yes yes
618-856 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2022-08-09 yes yes
618-907 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 2022-12-08 yes yes
618-918 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
618-953 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2023-07-18 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 - IL AT&T 13 54.2%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL Verizon 5 20.8%
ILLINOIS BELL TEL CO AT&T 4 16.7%
AMERICAN MESSAGING SERVICES, LLC American Messaging 1 4.2%
ONVOY, LLC Onvoy 1 4.2%

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 CENTRALIA in area code 618?

24 blocks: 231, 237, 267, 292, 322, 335, 339, 352, 359, 367, 436, 532 and 12 more, all listed in the table above.

Which carriers have numbers in CENTRALIA?

NEW CINGULAR WIRELESS PCS, LLC - IL (13 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (5 blocks), ILLINOIS BELL TEL CO (4 blocks), AMERICAN MESSAGING SERVICES, LLC (1 block), ONVOY, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CENTRALIA 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 618

All 786 prefixes in 618