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

OTHELLO prefixes in area code 509

NANPA records 5 assigned NXX blocks to rate center OTHELLO in area code 509, 0.7% of the 763 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. 4 holders hold those blocks, the largest being QWEST CORPORATION (2), CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK (1), COMPUTERS 5*, INC. DBA LOCALTEL - WA (1). The earliest assignment on record here is 2015-01-06 and the most recent 2020-08-17. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 0.7% of 509
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
509-331 Lumen QWEST CORPORATION – yes yes
509-346 Lumen CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK – yes yes
509-488 Lumen QWEST CORPORATION – no yes
509-510 COMPUTERS 5*, INC. DBA LOCALTEL - WA 2020-08-17 yes yes
509-913 Lumen CENTURYLINK COMMUNICATIONS, LLC 2015-01-06 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
QWEST CORPORATION Lumen 2 40%
CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK Lumen 1 20%
COMPUTERS 5*, INC. DBA LOCALTEL - WA – 1 20%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 20%

Frequently asked

Which prefixes belong to OTHELLO in area code 509?

5 blocks: 331, 346, 488, 510, 913. The table above gives the holder of each.

Which carriers have numbers in OTHELLO?

QWEST CORPORATION (2 blocks), CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK (1 block), COMPUTERS 5*, INC. DBA LOCALTEL - WA (1 block), CENTURYLINK 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 OTHELLO 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 509

All 763 prefixes in 509