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

WATERLOO prefixes in area code 319

NANPA records 47 assigned NXX blocks to rate center WATERLOO in area code 319, 8.3% of the 565 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. 13 holders hold those blocks, the largest being QWEST CORPORATION (14), UNITED STATES CELLULAR - IA (9), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (7). The earliest assignment on record here is 2001-03-27 and the most recent 2024-11-14. 32 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 260, 315, 618, 864 – overlay codes cover the same geography, so a rate center is served by all of them.

47 assigned blocks – 8.3% of 319
13 holders of record
32 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
319-215 UNITED STATES CELLULAR - IA 2004-01-19 yes yes
319-226 Lumen QWEST CORPORATION – no yes
319-229 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2014-08-08 yes yes
319-230 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA – no yes
319-231 UNITED STATES CELLULAR - IA – yes yes
319-232 Lumen QWEST CORPORATION – no yes
319-233 Lumen QWEST CORPORATION – no yes
319-234 Lumen QWEST CORPORATION – no yes
319-235 Lumen QWEST CORPORATION – no yes
319-236 Lumen QWEST CORPORATION – no yes
319-239 UNITED STATES CELLULAR - IA – yes yes
319-240 UNITED STATES CELLULAR - IA – yes yes
319-252 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2016-06-29 yes yes
319-269 UNITED STATES CELLULAR - IA – yes yes
319-272 Lumen QWEST CORPORATION – no yes
319-274 Lumen QWEST CORPORATION – yes yes
319-287 Lumen QWEST CORPORATION – no yes
319-290 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA – no yes
319-291 Lumen QWEST CORPORATION – no yes
319-292 Lumen QWEST CORPORATION – no yes
319-296 Lumen QWEST CORPORATION – yes yes
319-300 T-Mobile T-MOBILE USA, INC. 2018-08-27 yes yes
319-340 T-Mobile T-MOBILE USA, INC. 2022-07-27 yes yes
319-348 FRACTEL, LLC 2019-12-17 yes yes
319-349 INTEGRATED PATH COMMUNCATIONS, LLC - IA 2015-05-12 yes yes
319-404 UNITED STATES CELLULAR - IA – yes yes
319-415 UNITED STATES CELLULAR - IA 2001-03-27 yes yes
319-420 Onvoy ONVOY, LLC - IA 2023-06-29 yes yes
319-427 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA – yes yes
319-429 UNITED STATES CELLULAR - IA 2007-06-07 yes yes
319-433 Windstream PAETEC ITEL, LLC – yes yes
319-464 AT&T AT&T - LOCAL – yes yes
319-486 T-Mobile T-MOBILE USA, INC. 2011-04-28 yes yes
319-493 T-Mobile T-MOBILE USA, INC. – yes yes
319-502 Lumen LEVEL 3 COMMUNICATIONS, LLC - IA 2024-11-14 yes yes
319-504 T-Mobile T-MOBILE USA, INC. – yes yes
319-505 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 2012-09-25 yes yes
319-529 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 2010-09-02 yes yes
319-595 MCC TELEPHONY LLC 2018-06-14 yes yes
319-610 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2001-06-14 yes yes
319-830 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA – yes yes
319-833 Lumen QWEST CORPORATION – no yes
319-874 Lumen QWEST CORPORATION – no yes
319-883 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 2009-03-24 yes yes
319-888 Lumen CENTURYLINK COMMUNICATIONS, LLC – yes yes
319-939 UNITED STATES CELLULAR - IA – yes yes
319-961 T-Mobile T-MOBILE USA, INC. – 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
QWEST CORPORATION Lumen 14 29.8%
UNITED STATES CELLULAR - IA – 9 19.1%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA Verizon 7 14.9%
T-MOBILE USA, INC. T-Mobile 6 12.8%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 3 6.4%
FRACTEL, LLC – 1 2.1%
INTEGRATED PATH COMMUNCATIONS, LLC - IA – 1 2.1%
ONVOY, LLC - IA Onvoy 1 2.1%
PAETEC ITEL, LLC Windstream 1 2.1%
AT&T - LOCAL AT&T 1 2.1%
LEVEL 3 COMMUNICATIONS, LLC - IA Lumen 1 2.1%
MCC TELEPHONY LLC – 1 2.1%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 2.1%

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 WATERLOO in area code 319?

47 blocks: 215, 226, 229, 230, 231, 232, 233, 234, 235, 236, 239, 240 and 35 more, all listed in the table above.

Which carriers have numbers in WATERLOO?

QWEST CORPORATION (14 blocks), UNITED STATES CELLULAR - IA (9 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (7 blocks), T-MOBILE USA, INC. (6 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (3 blocks), FRACTEL, 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 WATERLOO 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 319

All 565 prefixes in 319