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

GALESBURG prefixes in area code 309

NANPA records 20 assigned NXX blocks to rate center GALESBURG in area code 309, 2.5% 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. 10 holders hold those blocks, the largest being BRIGHTSPEED OF ILLINOIS, LLC (5), UNITED STATES CELLULAR - IL (4), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (4). The earliest assignment on record here is 2004-08-30 and the most recent 2020-07-22. 12 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 269, 620, 701 – overlay codes cover the same geography, so a rate center is served by all of them.

20 assigned blocks – 2.5% of 309
10 holders of record
12 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
309-221 UNITED STATES CELLULAR - IL – yes yes
309-297 SKYE TELECOM LLC DBA SKYETEL – yes yes
309-299 T-Mobile T-MOBILE USA, INC. – yes yes
309-315 Lumen CENTURYLINK COMMUNICATIONS, LLC 2014-03-05 yes yes
309-335 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
309-337 UNITED STATES CELLULAR - IL – yes yes
309-341 Brightspeed BRIGHTSPEED OF ILLINOIS, LLC – no yes
309-342 Brightspeed BRIGHTSPEED OF ILLINOIS, LLC – no yes
309-343 Brightspeed BRIGHTSPEED OF ILLINOIS, LLC – no yes
309-344 Brightspeed BRIGHTSPEED OF ILLINOIS, LLC – no yes
309-345 Brightspeed BRIGHTSPEED OF ILLINOIS, LLC – no yes
309-351 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – yes yes
309-368 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
309-371 UNITED STATES CELLULAR - IL – yes yes
309-381 Vonage VONAGE AMERICA LLC 2019-09-30 yes yes
309-509 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 2004-08-30 no yes
309-541 Onvoy ONVOY, LLC 2015-11-17 yes yes
309-549 Telnyx TELNYX LLC 2019-12-17 yes yes
309-719 STRATUS NETWORKS 2020-07-22 yes yes
309-973 UNITED STATES CELLULAR - 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
BRIGHTSPEED OF ILLINOIS, LLC Brightspeed 5 25%
UNITED STATES CELLULAR - IL – 4 20%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL Verizon 4 20%
SKYE TELECOM LLC DBA SKYETEL – 1 5%
T-MOBILE USA, INC. T-Mobile 1 5%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 5%
VONAGE AMERICA LLC Vonage 1 5%
ONVOY, LLC Onvoy 1 5%
TELNYX LLC Telnyx 1 5%
STRATUS NETWORKS – 1 5%

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 GALESBURG in area code 309?

20 blocks: 221, 297, 299, 315, 335, 337, 341, 342, 343, 344, 345, 351 and 8 more, all listed in the table above.

Which carriers have numbers in GALESBURG?

BRIGHTSPEED OF ILLINOIS, LLC (5 blocks), UNITED STATES CELLULAR - IL (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (4 blocks), SKYE TELECOM LLC DBA SKYETEL (1 block), T-MOBILE USA, INC. (1 block), CENTURYLINK COMMUNICATIONS, 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 GALESBURG 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