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

ONAWA prefixes in area code 712

NANPA records 6 assigned NXX blocks to rate center ONAWA in area code 712, 0.9% of the 633 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 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (2), NEW CINGULAR WIRELESS PCS, LLC - IL (1), STRATUS NETWORKS (1). The earliest assignment on record here is 2003-03-31 and the most recent 2020-12-09. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

6 assigned blocks – 0.9% of 712
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
712-219 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2003-03-31 yes yes
712-398 STRATUS NETWORKS 2020-12-09 yes yes
712-420 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA – yes yes
712-423 Lumen QWEST CORPORATION – yes yes
712-431 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA – yes yes
712-433 COMMCHOICE OF IOWA, LLC – 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA Verizon 2 33.3%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 16.7%
STRATUS NETWORKS – 1 16.7%
QWEST CORPORATION Lumen 1 16.7%
COMMCHOICE OF IOWA, LLC – 1 16.7%

Frequently asked

Which prefixes belong to ONAWA in area code 712?

6 blocks: 219, 398, 420, 423, 431, 433. The table above gives the holder of each.

Which carriers have numbers in ONAWA?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (2 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), STRATUS NETWORKS (1 block), QWEST CORPORATION (1 block), COMMCHOICE OF IOWA, 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 ONAWA 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 712

All 633 prefixes in 712