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

BETHALTO prefixes in area code 618

NANPA records 4 assigned NXX blocks to rate center BETHALTO in area code 618, 0.5% 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 (1), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL (1), LEVEL 3 COMMUNICATIONS, LLC - IL (1). The earliest assignment on record here is 2004-03-29 and the most recent 2022-09-09. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.5% of 618
4 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
618-377 AT&T ILLINOIS BELL TEL CO – no yes
618-693 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 2013-11-22 yes yes
618-717 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL 2004-03-29 yes yes
618-870 Dish BOOST SUBSCRIBERCO L.L.C. 2022-09-09 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 1 25%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL Verizon 1 25%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 1 25%
BOOST SUBSCRIBERCO L.L.C. Dish 1 25%

Frequently asked

Which prefixes belong to BETHALTO in area code 618?

4 blocks: 377, 693, 717, 870. The table above gives the holder of each.

Which carriers have numbers in BETHALTO?

ILLINOIS BELL TEL CO (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL (1 block), LEVEL 3 COMMUNICATIONS, LLC - IL (1 block), BOOST SUBSCRIBERCO L.L.C. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is BETHALTO 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