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

LEMONT prefixes in area code 630

NANPA records 21 assigned NXX blocks to rate center LEMONT in area code 630, 2.7% of the 782 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 (13), TELEPORT COMMUNICATIONS AMERICA, LLC - IL (4), PAETEC ITEL, LLC (1). The earliest assignment on record here is 2001-04-09 and the most recent 2007-02-15. 13 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 331 – overlay codes cover the same geography, so a rate center is served by all of them.

21 assigned blocks – 2.7% of 630
6 holders of record
13 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
630-226 AT&T ILLINOIS BELL TEL CO – no yes
630-243 AT&T ILLINOIS BELL TEL CO – yes yes
630-252 AT&T ILLINOIS BELL TEL CO – no yes
630-257 AT&T ILLINOIS BELL TEL CO – no yes
630-296 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL – yes yes
630-312 AT&T ILLINOIS BELL TEL CO 2007-02-15 yes yes
630-343 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL – yes yes
630-378 AT&T ILLINOIS BELL TEL CO – yes yes
630-410 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL – yes yes
630-633 Windstream PAETEC ITEL, LLC 2001-04-11 yes yes
630-679 AT&T ILLINOIS BELL TEL CO – no yes
630-685 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL – yes yes
630-739 AT&T ILLINOIS BELL TEL CO – no yes
630-754 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL – yes yes
630-755 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL – yes yes
630-759 AT&T ILLINOIS BELL TEL CO – no yes
630-771 AT&T ILLINOIS BELL TEL CO – yes yes
630-783 AT&T ILLINOIS BELL TEL CO – no yes
630-863 T-Mobile T-MOBILE USA, INC. 2001-04-09 yes yes
630-914 AT&T ILLINOIS BELL TEL CO 2006-06-20 yes yes
630-972 AT&T ILLINOIS BELL TEL CO – 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
ILLINOIS BELL TEL CO AT&T 13 61.9%
TELEPORT COMMUNICATIONS AMERICA, LLC - IL AT&T 4 19%
PAETEC ITEL, LLC Windstream 1 4.8%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 1 4.8%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL Verizon 1 4.8%
T-MOBILE USA, INC. T-Mobile 1 4.8%

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 LEMONT in area code 630?

21 blocks: 226, 243, 252, 257, 296, 312, 343, 378, 410, 633, 679, 685 and 9 more, all listed in the table above.

Which carriers have numbers in LEMONT?

ILLINOIS BELL TEL CO (13 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - IL (4 blocks), PAETEC ITEL, LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - IL (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL (1 block), T-MOBILE USA, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is LEMONT 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 630

All 782 prefixes in 630