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

CLARKSTON prefixes in area code 509

NANPA records 10 assigned NXX blocks to rate center CLARKSTON in area code 509, 1.3% 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. 5 holders hold those blocks, the largest being MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA (2), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2016-03-23 and the most recent 2022-05-23. 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 codes 248, 947 – overlay codes cover the same geography, so a rate center is served by all of them.

10 assigned blocks – 1.3% of 509
5 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
509-206 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 2022-05-23 yes yes
509-254 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
509-295 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
509-552 T-Mobile T-MOBILE USA, INC. – yes yes
509-596 T-Mobile T-MOBILE USA, INC. 2016-03-23 yes yes
509-751 Lumen QWEST CORPORATION – yes yes
509-758 Lumen QWEST CORPORATION – no yes
509-769 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
509-780 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA – yes yes
509-800 Telnyx TELNYX LLC – 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
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 3 30%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA Verizon 2 20%
T-MOBILE USA, INC. T-Mobile 2 20%
QWEST CORPORATION Lumen 2 20%
TELNYX LLC Telnyx 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 CLARKSTON in area code 509?

10 blocks: 206, 254, 295, 552, 596, 751, 758, 769, 780, 800. The table above gives the holder of each.

Which carriers have numbers in CLARKSTON?

MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA (2 blocks), T-MOBILE USA, INC. (2 blocks), QWEST CORPORATION (2 blocks), TELNYX 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 CLARKSTON 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