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

HEPPNER prefixes in area code 541

NANPA records 3 assigned NXX blocks to rate center HEPPNER in area code 541, 0.4% 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. 3 holders hold those blocks, the largest being UNITED STATES CELLULAR - OR (1), CENTURYTEL OF OREGON, INC. DBA CENTURYLINK (1), ONVOY, LLC - OR (1). The earliest assignment on record here is 2002-09-06 and the most recent 2008-09-04. 2 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.

3 assigned blocks – 0.4% of 541
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
541-256 UNITED STATES CELLULAR - OR 2002-09-06 yes yes
541-676 Lumen CENTURYTEL OF OREGON, INC. DBA CENTURYLINK – no yes
541-795 Onvoy ONVOY, LLC - OR 2008-09-04 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
UNITED STATES CELLULAR - OR – 1 33.3%
CENTURYTEL OF OREGON, INC. DBA CENTURYLINK Lumen 1 33.3%
ONVOY, LLC - OR Onvoy 1 33.3%

Frequently asked

Which prefixes belong to HEPPNER in area code 541?

3 blocks: 256, 676, 795. The table above gives the holder of each.

Which carriers have numbers in HEPPNER?

UNITED STATES CELLULAR - OR (1 block), CENTURYTEL OF OREGON, INC. DBA CENTURYLINK (1 block), ONVOY, LLC - 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 HEPPNER 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