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

HERMISTON prefixes in area code 541

NANPA records 12 assigned NXX blocks to rate center HERMISTON in area code 541, 1.5% of the 783 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 T-MOBILE USA, INC. (3), QWEST CORPORATION (3), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR (2). The earliest assignment on record here is 2001-01-19 and the most recent 2014-04-02. 9 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 code 458 – overlay codes cover the same geography, so a rate center is served by all of them.

12 assigned blocks – 1.5% of 541
7 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
541-289 EASTERN OREGON TELECOM, LLC - OR 2001-01-19 no yes
541-303 Lumen LEVEL 3 COMMUNICATIONS, LLC - OR 2001-05-16 yes yes
541-314 T-Mobile T-MOBILE USA, INC. 2001-08-17 yes yes
541-371 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 2014-04-02 yes yes
541-561 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR – yes yes
541-564 Lumen QWEST CORPORATION – no yes
541-567 Lumen QWEST CORPORATION – no yes
541-571 UNITED STATES CELLULAR - OR – yes yes
541-656 T-Mobile T-MOBILE USA, INC. 2009-11-06 yes yes
541-667 Lumen QWEST CORPORATION – yes yes
541-701 Charter CHARTER IP ENABLED SERVICES, LLC 2007-05-14 yes yes
541-720 T-Mobile T-MOBILE USA, INC. – 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
T-MOBILE USA, INC. T-Mobile 3 25%
QWEST CORPORATION Lumen 3 25%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR Verizon 2 16.7%
EASTERN OREGON TELECOM, LLC - OR – 1 8.3%
LEVEL 3 COMMUNICATIONS, LLC - OR Lumen 1 8.3%
UNITED STATES CELLULAR - OR – 1 8.3%
CHARTER IP ENABLED SERVICES, LLC Charter 1 8.3%

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 HERMISTON in area code 541?

12 blocks: 289, 303, 314, 371, 561, 564, 567, 571, 656, 667, 701, 720. The table above gives the holder of each.

Which carriers have numbers in HERMISTON?

T-MOBILE USA, INC. (3 blocks), QWEST CORPORATION (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR (2 blocks), EASTERN OREGON TELECOM, LLC - OR (1 block), LEVEL 3 COMMUNICATIONS, LLC - OR (1 block), UNITED STATES CELLULAR - OR (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is HERMISTON 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 541

All 783 prefixes in 541