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

GLEN ELLYN prefixes in area code 630

NANPA records 14 assigned NXX blocks to rate center GLEN ELLYN in area code 630, 1.8% 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. 7 holders hold those blocks, the largest being ILLINOIS BELL TEL CO (5), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2), PAETEC ITEL, LLC (2). The earliest assignment on record here is 2001-04-11 and the most recent 2001-04-11. 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 331 – overlay codes cover the same geography, so a rate center is served by all of them.

14 assigned blocks – 1.8% of 630
7 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
630-348 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
630-403 Windstream PAETEC ITEL, LLC – yes yes
630-446 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
630-469 AT&T ILLINOIS BELL TEL CO – no yes
630-474 Comcast COMCAST IP PHONE, LLC – yes yes
630-534 Windstream PAETEC ITEL, LLC 2001-04-11 yes yes
630-545 AT&T ILLINOIS BELL TEL CO – no yes
630-547 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL – yes yes
630-790 AT&T ILLINOIS BELL TEL CO – no yes
630-793 Onvoy ONVOY, LLC – yes yes
630-858 AT&T ILLINOIS BELL TEL CO – no yes
630-866 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL – yes yes
630-942 AT&T ILLINOIS BELL TEL CO – no yes
630-984 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 5 35.7%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 2 14.3%
PAETEC ITEL, LLC Windstream 2 14.3%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 2 14.3%
COMCAST IP PHONE, LLC Comcast 1 7.1%
ONVOY, LLC Onvoy 1 7.1%
TELEPORT COMMUNICATIONS AMERICA, LLC - IL AT&T 1 7.1%

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 GLEN ELLYN in area code 630?

14 blocks: 348, 403, 446, 469, 474, 534, 545, 547, 790, 793, 858, 866 and 2 more, all listed in the table above.

Which carriers have numbers in GLEN ELLYN?

ILLINOIS BELL TEL CO (5 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2 blocks), PAETEC ITEL, LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - IL (2 blocks), COMCAST IP PHONE, LLC (1 block), ONVOY, 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 GLEN ELLYN 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