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

RENTON prefixes in area code 425

NANPA records 53 assigned NXX blocks to rate center RENTON in area code 425, 8.4% of the 628 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. 11 holders hold those blocks, the largest being QWEST CORPORATION (18), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (8), LEVEL 3 COMMUNICATIONS, LLC - WA (6). The earliest assignment on record here is 2001-03-20 and the most recent 2025-01-24. 36 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

53 assigned blocks – 8.4% of 425
11 holders of record
36 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
425-203 Lumen QWEST CORPORATION – no yes
425-204 Lumen QWEST CORPORATION – no yes
425-207 Windstream PAETEC ITEL, LLC – yes yes
425-226 Lumen QWEST CORPORATION – no yes
425-227 Lumen QWEST CORPORATION – no yes
425-228 Lumen QWEST CORPORATION – no yes
425-234 Lumen QWEST CORPORATION – yes yes
425-235 Lumen QWEST CORPORATION – no yes
425-237 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - WA – no yes
425-243 Onvoy ONVOY, LLC - WA – yes yes
425-251 Lumen QWEST CORPORATION – no yes
425-254 Lumen QWEST CORPORATION – no yes
425-255 Lumen QWEST CORPORATION – no yes
425-264 Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM – yes yes
425-271 Lumen QWEST CORPORATION – no yes
425-272 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
425-276 Lumen LEVEL 3 COMMUNICATIONS, LLC - WA – yes yes
425-277 Lumen QWEST CORPORATION – no yes
425-282 Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM – yes yes
425-291 Lumen QWEST CORPORATION – yes yes
425-306 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-03-26 no yes
425-336 Lumen LEVEL 3 COMMUNICATIONS, LLC - WA 2002-02-21 yes yes
425-390 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA – yes yes
425-430 Lumen QWEST CORPORATION – no yes
425-473 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 2023-02-13 yes yes
425-479 AT&T NEW CINGULAR WIRELESS PCS, LLC 2023-12-11 yes yes
425-496 Lumen LEVEL 3 TELECOM OF WASHINGTON, LLC - WA – yes yes
425-517 T-Mobile T-MOBILE USA, INC. 2021-02-25 yes yes
425-523 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
425-524 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
425-525 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
425-528 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
425-529 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
425-545 T-Mobile T-MOBILE USA, INC. 2021-12-14 yes yes
425-547 T-Mobile T-MOBILE USA, INC. 2022-08-18 yes yes
425-566 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 2025-01-24 yes yes
425-572 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - WA – yes yes
425-656 Lumen QWEST CORPORATION – no yes
425-663 Lumen LEVEL 3 COMMUNICATIONS, LLC - WA – yes yes
425-687 Lumen QWEST CORPORATION – no yes
425-690 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2016-05-23 yes yes
425-728 Lumen LEVEL 3 COMMUNICATIONS, LLC - WA – yes yes
425-738 Lumen LEVEL 3 COMMUNICATIONS, LLC - WA – yes yes
425-757 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - WA – yes yes
425-793 Lumen QWEST CORPORATION – yes yes
425-873 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
425-902 Lumen LEVEL 3 COMMUNICATIONS, LLC - WA – yes yes
425-917 Lumen QWEST CORPORATION – no yes
425-919 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-03-20 yes yes
425-965 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - WA – yes yes
425-970 Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM – yes yes
425-981 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - WA 2001-04-23 yes yes
425-988 Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM – 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 18 34%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 8 15.1%
LEVEL 3 COMMUNICATIONS, LLC - WA Lumen 6 11.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - WA AT&T 5 9.4%
ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM Allstream 4 7.5%
NEW CINGULAR WIRELESS PCS, LLC AT&T 3 5.7%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA Verizon 3 5.7%
T-MOBILE USA, INC. T-Mobile 3 5.7%
PAETEC ITEL, LLC Windstream 1 1.9%
ONVOY, LLC - WA Onvoy 1 1.9%
LEVEL 3 TELECOM OF WASHINGTON, LLC - WA Lumen 1 1.9%

Frequently asked

Which prefixes belong to RENTON in area code 425?

53 blocks: 203, 204, 207, 226, 227, 228, 234, 235, 237, 243, 251, 254 and 41 more, all listed in the table above.

Which carriers have numbers in RENTON?

QWEST CORPORATION (18 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (8 blocks), LEVEL 3 COMMUNICATIONS, LLC - WA (6 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - WA (5 blocks), ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (4 blocks), NEW CINGULAR WIRELESS PCS, LLC (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is RENTON 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 425

All 628 prefixes in 425