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

ALTON prefixes in area code 618

NANPA records 15 assigned NXX blocks to rate center ALTON in area code 618, 1.9% 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. 4 holders hold those blocks, the largest being ILLINOIS BELL TEL CO (9), NEW CINGULAR WIRELESS PCS, LLC - IL (3), PAETEC ITEL, LLC (2). The earliest assignment on record here is 2014-11-21 and the most recent 2022-12-08. 11 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 207, 380, 417, 603 – overlay codes cover the same geography, so a rate center is served by all of them.

15 assigned blocks – 1.9% of 618
4 holders of record
11 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
618-208 Windstream PAETEC ITEL, LLC – yes yes
618-374 AT&T ILLINOIS BELL TEL CO – yes yes
618-433 AT&T ILLINOIS BELL TEL CO – yes yes
618-462 AT&T ILLINOIS BELL TEL CO – no yes
618-463 AT&T ILLINOIS BELL TEL CO – no yes
618-465 AT&T ILLINOIS BELL TEL CO – no yes
618-466 AT&T ILLINOIS BELL TEL CO – no yes
618-467 AT&T ILLINOIS BELL TEL CO – yes yes
618-468 AT&T ILLINOIS BELL TEL CO – yes yes
618-474 AT&T ILLINOIS BELL TEL CO – yes yes
618-619 Windstream PAETEC ITEL, LLC 2014-11-21 yes yes
618-636 NUSO, LLC 2020-09-04 yes yes
618-796 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2021-08-31 yes yes
618-818 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2022-02-01 yes yes
618-908 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2022-12-08 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
ILLINOIS BELL TEL CO AT&T 9 60%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 3 20%
PAETEC ITEL, LLC Windstream 2 13.3%
NUSO, LLC – 1 6.7%

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 ALTON in area code 618?

15 blocks: 208, 374, 433, 462, 463, 465, 466, 467, 468, 474, 619, 636 and 3 more, all listed in the table above.

Which carriers have numbers in ALTON?

ILLINOIS BELL TEL CO (9 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (3 blocks), PAETEC ITEL, LLC (2 blocks), NUSO, 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 ALTON 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