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

RIVERSIDE prefixes in area code 708

NANPA records 11 assigned NXX blocks to rate center RIVERSIDE in area code 708, 1.4% 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. 5 holders hold those blocks, the largest being MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3), ILLINOIS BELL TEL CO (3), PAETEC ITEL, LLC (2). The earliest assignment on record here is 2001-04-12 and the most recent 2001-04-12. 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 codes 319, 856, 909, 951 – overlay codes cover the same geography, so a rate center is served by all of them.

11 assigned blocks – 1.4% of 708
5 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
708-221 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
708-426 Windstream PAETEC ITEL, LLC – yes yes
708-442 AT&T ILLINOIS BELL TEL CO – no yes
708-443 AT&T ILLINOIS BELL TEL CO – yes yes
708-447 AT&T ILLINOIS BELL TEL CO – no yes
708-526 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL – yes yes
708-762 Windstream PAETEC ITEL, LLC 2001-04-12 yes yes
708-777 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
708-853 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL – yes yes
708-871 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL – yes yes
708-883 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – 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
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 3 27.3%
ILLINOIS BELL TEL CO AT&T 3 27.3%
PAETEC ITEL, LLC Windstream 2 18.2%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 2 18.2%
TELEPORT COMMUNICATIONS AMERICA, LLC - IL AT&T 1 9.1%

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 RIVERSIDE in area code 708?

11 blocks: 221, 426, 442, 443, 447, 526, 762, 777, 853, 871, 883. The table above gives the holder of each.

Which carriers have numbers in RIVERSIDE?

MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3 blocks), ILLINOIS BELL TEL CO (3 blocks), PAETEC ITEL, LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - IL (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - IL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is RIVERSIDE 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