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

ALEDO prefixes in area code 309

NANPA records 5 assigned NXX blocks to rate center ALEDO in area code 309, 0.6% 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. 4 holders hold those blocks, the largest being CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (2), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (1), MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL (1). The earliest assignment on record here is 2003-07-28 and the most recent 2016-10-28. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 0.6% of 309
4 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
309-513 Frontier CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 2016-10-28 yes yes
309-574 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 2003-07-28 yes yes
309-582 Frontier CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL – yes yes
309-625 MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 2005-03-22 yes yes
309-628 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL 2006-03-15 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
CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL Frontier 2 40%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL Verizon 1 20%
MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL – 1 20%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 1 20%

Frequently asked

Which prefixes belong to ALEDO in area code 309?

5 blocks: 513, 574, 582, 625, 628. The table above gives the holder of each.

Which carriers have numbers in ALEDO?

CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (1 block), MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL (1 block), LEVEL 3 COMMUNICATIONS, 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 ALEDO 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 309

All 786 prefixes in 309