CLACKAMAS prefixes in area code 971
NANPA records 21 assigned NXX blocks to rate center CLACKAMAS in area code 971, 4.7% of the 444 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. 9 holders hold those blocks, the largest being T-MOBILE USA, INC. (8), ONVOY, LLC - OR (4), ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (3). The earliest assignment on record here is 2001-10-12 and the most recent 2026-10-28. 20 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 503 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 971-204 | Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | – | yes | yes |
| 971-206 | Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | – | yes | yes |
| 971-233 | Windstream PAETEC ITEL, LLC | 2001-10-12 | yes | yes |
| 971-236 | Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 2001-10-16 | yes | yes |
| 971-335 | T-Mobile T-MOBILE USA, INC. | 2018-08-06 | yes | yes |
| 971-353 | T-Mobile T-MOBILE USA, INC. | 2019-07-08 | yes | yes |
| 971-356 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2019-07-12 | yes | yes |
| 971-377 | Onvoy ONVOY, LLC - OR | 2017-09-12 | yes | yes |
| 971-381 | Vonage VONAGE AMERICA LLC | 2020-09-09 | yes | yes |
| 971-396 | T-Mobile T-MOBILE USA, INC. | 2021-04-12 | yes | yes |
| 971-419 | T-Mobile T-MOBILE USA, INC. | 2021-11-09 | yes | yes |
| 971-447 | T-Mobile T-MOBILE USA, INC. | 2023-01-13 | yes | yes |
| 971-459 | T-Mobile T-MOBILE USA, INC. | 2023-08-31 | yes | yes |
| 971-471 | Onvoy ONVOY, LLC - OR | 2022-10-03 | yes | yes |
| 971-476 | T-Mobile T-MOBILE USA, INC. | 2023-12-05 | yes | yes |
| 971-486 | T-Mobile T-MOBILE USA, INC. | 2024-03-25 | yes | yes |
| 971-529 | FRACTEL, LLC | 2021-08-26 | yes | yes |
| 971-535 | Onvoy ONVOY, LLC - OR | 2026-04-24 | yes | yes |
| 971-552 | Onvoy ONVOY, LLC - OR | 2026-10-28 | yes | no |
| 971-825 | TON80 COMMUNICATIONS, LLC | 2022-03-29 | yes | yes |
| 971-925 | XO OREGON, INC. | – | no | 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 |
|---|---|---|---|
| T-MOBILE USA, INC. | T-Mobile | 8 | 38.1% |
| ONVOY, LLC - OR | Onvoy | 4 | 19% |
| ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | Allstream | 3 | 14.3% |
| PAETEC ITEL, LLC | Windstream | 1 | 4.8% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 1 | 4.8% |
| VONAGE AMERICA LLC | Vonage | 1 | 4.8% |
| FRACTEL, LLC | – | 1 | 4.8% |
| TON80 COMMUNICATIONS, LLC | – | 1 | 4.8% |
| XO OREGON, INC. | – | 1 | 4.8% |
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 CLACKAMAS in area code 971?
21 blocks: 204, 206, 233, 236, 335, 353, 356, 377, 381, 396, 419, 447 and 9 more, all listed in the table above.
Which carriers have numbers in CLACKAMAS?
T-MOBILE USA, INC. (8 blocks), ONVOY, LLC - OR (4 blocks), ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (3 blocks), PAETEC ITEL, LLC (1 block), NEW CINGULAR WIRELESS PCS, LLC (1 block), VONAGE AMERICA 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 CLACKAMAS 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.