KENNEWICK prefixes in area code 509
NANPA records 42 assigned NXX blocks to rate center KENNEWICK in area code 509, 5.5% 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. 13 holders hold those blocks, the largest being ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER (11), T-MOBILE USA, INC. (8), UNITED STATES CELLULAR - WA (4). The earliest assignment on record here is 2001-09-28 and the most recent 2025-06-27. 35 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 509-205 | T-Mobile T-MOBILE USA, INC. | 2003-02-20 | yes | yes |
| 509-212 | T-Mobile T-MOBILE USA, INC. | 2013-07-23 | yes | yes |
| 509-221 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 2013-08-07 | yes | yes |
| 509-222 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | yes | yes |
| 509-231 | Onvoy ONVOY, LLC - WA | – | yes | yes |
| 509-308 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 509-366 | UNITED STATES CELLULAR - WA | – | yes | yes |
| 509-374 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | yes | yes |
| 509-378 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | – | yes | yes |
| 509-396 | Lumen LEVEL 3 COMMUNICATIONS, LLC - WA | – | yes | yes |
| 509-405 | T-Mobile T-MOBILE USA, INC. | 2016-10-07 | yes | yes |
| 509-438 | T-Mobile T-MOBILE USA, INC. | 2002-06-10 | yes | yes |
| 509-440 | T-Mobile T-MOBILE USA, INC. | 2009-05-27 | yes | yes |
| 509-460 | T-Mobile T-MOBILE USA, INC. | 2001-09-28 | yes | yes |
| 509-491 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - WA | 2012-03-22 | yes | yes |
| 509-518 | Charter ONVOY SPECTRUM, LLC | – | yes | yes |
| 509-551 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2002-07-23 | yes | yes |
| 509-572 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | – | yes | yes |
| 509-579 | Lumen CENTURYLINK COMMUNICATIONS, LLC | – | yes | yes |
| 509-581 | Onvoy ONVOY, LLC - WA | 2001-12-11 | yes | yes |
| 509-582 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | no | yes |
| 509-585 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | no | yes |
| 509-586 | Ziply Fiber ZIPLY FIBER NORTHWEST LLC DBA ZIPLY FIBER | – | no | yes |
| 509-591 | Lumen LEVEL 3 COMMUNICATIONS, LLC - WA | 2002-05-07 | yes | yes |
| 509-614 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 2024-04-15 | yes | yes |
| 509-619 | Charter CHARTER IP ENABLED SERVICES, LLC | 2007-03-05 | yes | yes |
| 509-627 | Ziply Fiber ZIPLY FIBER NORTHWEST LLC DBA ZIPLY FIBER | – | yes | yes |
| 509-628 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | yes | yes |
| 509-706 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2025-06-27 | yes | yes |
| 509-727 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 509-734 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | no | yes |
| 509-735 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | no | yes |
| 509-736 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | no | yes |
| 509-737 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | yes | yes |
| 509-783 | Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | – | no | yes |
| 509-802 | SKYE TELECOM LLC DBA SKYETEL | – | yes | yes |
| 509-820 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 2014-09-18 | yes | yes |
| 509-870 | Onvoy ONVOY, LLC - WA | – | yes | yes |
| 509-873 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2018-10-19 | yes | yes |
| 509-947 | UNITED STATES CELLULAR - WA | – | yes | yes |
| 509-948 | UNITED STATES CELLULAR - WA | – | yes | yes |
| 509-987 | UNITED STATES CELLULAR - WA | – | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | Ziply Fiber | 11 | 26.2% |
| T-MOBILE USA, INC. | T-Mobile | 8 | 19% |
| UNITED STATES CELLULAR - WA | – | 4 | 9.5% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | Verizon | 4 | 9.5% |
| ONVOY, LLC - WA | Onvoy | 3 | 7.1% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 3 | 7.1% |
| LEVEL 3 COMMUNICATIONS, LLC - WA | Lumen | 2 | 4.8% |
| ZIPLY FIBER NORTHWEST LLC DBA ZIPLY FIBER | Ziply Fiber | 2 | 4.8% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - WA | AT&T | 1 | 2.4% |
| ONVOY SPECTRUM, LLC | Charter | 1 | 2.4% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 2.4% |
| CHARTER IP ENABLED SERVICES, LLC | Charter | 1 | 2.4% |
| SKYE TELECOM LLC DBA SKYETEL | – | 1 | 2.4% |
Frequently asked
Which prefixes belong to KENNEWICK in area code 509?
42 blocks: 205, 212, 221, 222, 231, 308, 366, 374, 378, 396, 405, 438 and 30 more, all listed in the table above.
Which carriers have numbers in KENNEWICK?
ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER (11 blocks), T-MOBILE USA, INC. (8 blocks), UNITED STATES CELLULAR - WA (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA (4 blocks), ONVOY, LLC - WA (3 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 KENNEWICK 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.