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

CARBONDALE prefixes in area code 618

NANPA records 33 assigned NXX blocks to rate center CARBONDALE in area code 618, 4.2% 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. 12 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (8), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (7), FRONTIER NORTH, INC. - IL (6). The earliest assignment on record here is 2002-05-13 and the most recent 2025-06-18. 20 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 272, 570, 730, 970 – overlay codes cover the same geography, so a rate center is served by all of them.

33 assigned blocks – 4.2% of 618
12 holders of record
20 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
618-201 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
618-203 T-Mobile T-MOBILE USA, INC. – yes yes
618-291 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2025-06-18 yes yes
618-300 Onvoy ONVOY, LLC 2011-02-17 yes yes
618-303 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
618-305 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – yes yes
618-319 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL 2002-09-10 yes yes
618-331 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
618-351 Frontier FRONTIER NORTH, INC. - IL – no yes
618-353 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
618-412 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2004-11-02 yes yes
618-434 T-Mobile T-MOBILE USA, INC. 2008-11-26 yes yes
618-453 Frontier FRONTIER NORTH, INC. - IL – no yes
618-457 Frontier FRONTIER NORTH, INC. - IL – no yes
618-490 MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 2010-03-10 yes yes
618-503 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL 2002-05-13 yes yes
618-519 MCC NETWORK SERVICES, LLC – yes yes
618-521 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
618-525 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
618-527 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
618-528 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
618-529 Frontier FRONTIER NORTH, INC. - IL – no yes
618-534 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
618-536 Frontier FRONTIER NORTH, INC. - IL – no yes
618-549 Frontier FRONTIER NORTH, INC. - IL – no yes
618-559 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
618-561 NUSO, LLC – yes yes
618-605 NUSO, LLC 2013-03-13 yes yes
618-630 STRATUS NETWORKS 2020-08-04 yes yes
618-713 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 2002-08-09 no yes
618-784 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2025-06-18 yes yes
618-901 Peerless PEERLESS NETWORK OF ILLINOIS, LLC - IL 2022-11-08 yes yes
618-967 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no 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 8 24.2%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL Verizon 7 21.2%
FRONTIER NORTH, INC. - IL Frontier 6 18.2%
T-MOBILE USA, INC. T-Mobile 2 6.1%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 2 6.1%
NUSO, LLC – 2 6.1%
ONVOY, LLC Onvoy 1 3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 3%
MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL – 1 3%
MCC NETWORK SERVICES, LLC – 1 3%
STRATUS NETWORKS – 1 3%
PEERLESS NETWORK OF ILLINOIS, LLC - IL Peerless 1 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 CARBONDALE in area code 618?

33 blocks: 201, 203, 291, 300, 303, 305, 319, 331, 351, 353, 412, 434 and 21 more, all listed in the table above.

Which carriers have numbers in CARBONDALE?

NEW CINGULAR WIRELESS PCS, LLC - IL (8 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (7 blocks), FRONTIER NORTH, INC. - IL (6 blocks), T-MOBILE USA, INC. (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - IL (2 blocks), NUSO, LLC (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CARBONDALE 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