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

WASHINGTON prefixes in area code 319

NANPA records 10 assigned NXX blocks to rate center WASHINGTON in area code 319, 1.8% 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. 6 holders hold those blocks, the largest being WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH (3), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (2), UNITED STATES CELLULAR - IA (2). The earliest assignment on record here is 2001-05-25 and the most recent 2017-11-03. 8 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 207, 252, 309, 337 – overlay codes cover the same geography, so a rate center is served by all of them.

10 assigned blocks – 1.8% of 319
6 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
319-458 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA – yes yes
319-460 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA – yes yes
319-461 UNITED STATES CELLULAR - IA – yes yes
319-548 T-Mobile T-MOBILE USA, INC. – no yes
319-591 UNITED STATES CELLULAR - IA – yes yes
319-598 LOCAL TELEPHONE DATA SERVICES CORP. 2001-05-25 yes yes
319-653 Windstream WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH – no yes
319-789 Windstream WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 2015-06-25 yes yes
319-863 Windstream WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH – yes yes
319-864 KALONA COOPERATIVE TELEPHONE COMPANY - IA 2017-11-03 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
WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH Windstream 3 30%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA Verizon 2 20%
UNITED STATES CELLULAR - IA – 2 20%
T-MOBILE USA, INC. T-Mobile 1 10%
LOCAL TELEPHONE DATA SERVICES CORP. – 1 10%
KALONA COOPERATIVE TELEPHONE COMPANY - IA – 1 10%

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 WASHINGTON in area code 319?

10 blocks: 458, 460, 461, 548, 591, 598, 653, 789, 863, 864. The table above gives the holder of each.

Which carriers have numbers in WASHINGTON?

WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (2 blocks), UNITED STATES CELLULAR - IA (2 blocks), T-MOBILE USA, INC. (1 block), LOCAL TELEPHONE DATA SERVICES CORP. (1 block), KALONA COOPERATIVE TELEPHONE COMPANY - IA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WASHINGTON 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