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

FOREST prefixes in area code 708

NANPA records 18 assigned NXX blocks to rate center FOREST in area code 708, 2.3% of the 784 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. 8 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (5), ILLINOIS BELL TEL CO (4), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3). The earliest assignment on record here is 2001-04-12 and the most recent 2025-10-02. 16 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 352, 419, 464, 567 – overlay codes cover the same geography, so a rate center is served by all of them.

18 assigned blocks – 2.3% of 708
8 holders of record
16 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
708-209 AT&T ILLINOIS BELL TEL CO – yes yes
708-230 Onvoy ONVOY, LLC 2025-10-02 yes yes
708-366 AT&T ILLINOIS BELL TEL CO – no yes
708-405 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
708-427 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL – yes yes
708-435 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
708-488 AT&T ILLINOIS BELL TEL CO – yes yes
708-556 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2018-10-04 yes yes
708-616 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2015-08-17 yes yes
708-657 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
708-676 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2019-10-07 yes yes
708-689 Comcast COMCAST IP PHONE, LLC – yes yes
708-714 Windstream PAETEC ITEL, LLC 2001-04-12 yes yes
708-766 FRACTEL, LLC 2020-06-08 yes yes
708-771 AT&T ILLINOIS BELL TEL CO – no yes
708-776 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
708-834 Onvoy ONVOY, LLC – yes yes
708-835 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2016-04-27 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 5 27.8%
ILLINOIS BELL TEL CO AT&T 4 22.2%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 3 16.7%
ONVOY, LLC Onvoy 2 11.1%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 1 5.6%
COMCAST IP PHONE, LLC Comcast 1 5.6%
PAETEC ITEL, LLC Windstream 1 5.6%
FRACTEL, LLC – 1 5.6%

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 FOREST in area code 708?

18 blocks: 209, 230, 366, 405, 427, 435, 488, 556, 616, 657, 676, 689 and 6 more, all listed in the table above.

Which carriers have numbers in FOREST?

NEW CINGULAR WIRELESS PCS, LLC - IL (5 blocks), ILLINOIS BELL TEL CO (4 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3 blocks), ONVOY, LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - IL (1 block), COMCAST IP PHONE, 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 FOREST 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 708

All 784 prefixes in 708