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

OELWEIN prefixes in area code 319

NANPA records 7 assigned NXX blocks to rate center OELWEIN in area code 319, 1.2% 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. 7 holders hold those blocks, the largest being ONVOY, LLC - IA (1), UNITED STATES CELLULAR - IA (1), QWEST CORPORATION (1). The earliest assignment on record here is 2004-02-04 and the most recent 2021-12-29. 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

7 assigned blocks – 1.2% of 319
7 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
319-238 Onvoy ONVOY, LLC - IA 2004-02-04 yes yes
319-264 UNITED STATES CELLULAR - IA 2017-08-07 yes yes
319-283 Lumen QWEST CORPORATION – yes yes
319-284 Bandwidth BANDWIDTH.COM CLEC, LLC - IA – yes yes
319-323 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2020-06-16 yes yes
319-410 AUREON COMMUNICATIONS, LLC 2021-12-29 yes yes
319-509 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
ONVOY, LLC - IA Onvoy 1 14.3%
UNITED STATES CELLULAR - IA – 1 14.3%
QWEST CORPORATION Lumen 1 14.3%
BANDWIDTH.COM CLEC, LLC - IA Bandwidth 1 14.3%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 14.3%
AUREON COMMUNICATIONS, LLC – 1 14.3%
T-MOBILE USA, INC. T-Mobile 1 14.3%

Frequently asked

Which prefixes belong to OELWEIN in area code 319?

7 blocks: 238, 264, 283, 284, 323, 410, 509. The table above gives the holder of each.

Which carriers have numbers in OELWEIN?

ONVOY, LLC - IA (1 block), UNITED STATES CELLULAR - IA (1 block), QWEST CORPORATION (1 block), BANDWIDTH.COM CLEC, LLC - IA (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), AUREON 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 OELWEIN 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