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

LAKEFOREST prefixes in area code 847

NANPA records 16 assigned NXX blocks to rate center LAKEFOREST in area code 847, 2.0% 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. 6 holders hold those blocks, the largest being ILLINOIS BELL TEL CO (9), TELEPORT COMMUNICATIONS AMERICA, LLC - IL (2), LEVEL 3 COMMUNICATIONS, LLC - IL (2). The earliest assignment on record here is 2001-02-20 and the most recent 2001-02-20. 9 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 code 224 – overlay codes cover the same geography, so a rate center is served by all of them.

16 assigned blocks – 2% of 847
6 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
847-219 T-Mobile T-MOBILE USA, INC. 2001-02-20 no yes
847-234 AT&T ILLINOIS BELL TEL CO – no yes
847-235 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL – yes yes
847-283 AT&T ILLINOIS BELL TEL CO – yes yes
847-295 AT&T ILLINOIS BELL TEL CO – no yes
847-457 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL – yes yes
847-482 AT&T ILLINOIS BELL TEL CO – no yes
847-500 Onvoy ONVOY, LLC – yes yes
847-535 AT&T ILLINOIS BELL TEL CO – no yes
847-574 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL – yes yes
847-582 AT&T ILLINOIS BELL TEL CO – yes yes
847-604 AT&T ILLINOIS BELL TEL CO – yes yes
847-615 AT&T ILLINOIS BELL TEL CO – no yes
847-735 AT&T ILLINOIS BELL TEL CO – no yes
847-739 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
847-810 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL – 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 56.2%
TELEPORT COMMUNICATIONS AMERICA, LLC - IL AT&T 2 12.5%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 2 12.5%
T-MOBILE USA, INC. T-Mobile 1 6.2%
ONVOY, LLC Onvoy 1 6.2%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 6.2%

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 LAKEFOREST in area code 847?

16 blocks: 219, 234, 235, 283, 295, 457, 482, 500, 535, 574, 582, 604 and 4 more, all listed in the table above.

Which carriers have numbers in LAKEFOREST?

ILLINOIS BELL TEL CO (9 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - IL (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - IL (2 blocks), T-MOBILE USA, INC. (1 block), ONVOY, LLC (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES 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 LAKEFOREST 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 847

All 786 prefixes in 847