Phone numbers in Whatcomcty, Washington
Whatcomcty has 73 phone prefixes in area codes 360, 564.
Biggest holders: Ziply Fiber, CenturyLink / Lumen, Teleport Communications America. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 29%
- Local phone company 44%
- Internet / business phone carrier 27%
Every prefix in Whatcomcty
Search the first six digits of a number in this list. If it's here, the number started in Whatcomcty with the carrier shown. If it isn't, check the Washington page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 360-201 | AT&T Mobility | Mobile carrier | – |
| 360-220 | AT&T Mobility | Mobile carrier | – |
| 360-223 | T-Mobile (including Sprint) | Mobile carrier | – |
| 360-224 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 360-255 | Allstream | Internet / business phone carrier | – |
| 360-296 | Allstream | Internet / business phone carrier | – |
| 360-303 | Verizon Wireless | Mobile carrier | – |
| 360-305 | Verizon Wireless | Mobile carrier | – |
| 360-306 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 360-312 | Ziply Fiber | Local phone company | – |
| 360-318 | Ziply Fiber | Local phone company | – |
| 360-319 | Verizon Wireless | Mobile carrier | – |
| 360-325 | Teleport Communications America | Internet / business phone carrier | – |
| 360-332 | Ziply Fiber | Local phone company | – |
| 360-354 | Ziply Fiber | Local phone company | – |
| 360-366 | Ziply Fiber | Local phone company | – |
| 360-371 | Ziply Fiber | Local phone company | – |
| 360-380 | Ziply Fiber | Local phone company | – |
| 360-383 | Ziply Fiber | Local phone company | – |
| 360-384 | Ziply Fiber | Local phone company | – |
| 360-389 | AT&T Mobility | Mobile carrier | – |
| 360-392 | Teleport Communications America | Internet / business phone carrier | – |
| 360-393 | Verizon Wireless | Mobile carrier | – |
| 360-398 | Ziply Fiber | Local phone company | – |
| 360-410 | T-Mobile (including Sprint) | Mobile carrier | – |
| 360-441 | T-Mobile (including Sprint) | Mobile carrier | – |
| 360-483 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 360-510 | AT&T Mobility | Mobile carrier | – |
| 360-526 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 360-527 | CenturyLink / Lumen | Local phone company | – |
| 360-543 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 360-592 | Ziply Fiber | Local phone company | – |
| 360-594 | Allstream | Internet / business phone carrier | – |
| 360-595 | Ziply Fiber | Local phone company | – |
| 360-599 | Ziply Fiber | Local phone company | – |
| 360-603 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 360-617 | Ziply Fiber | Local phone company | – |
| 360-647 | CenturyLink / Lumen | Local phone company | – |
| 360-650 | CenturyLink / Lumen | Local phone company | – |
| 360-656 | Teleport Communications America | Internet / business phone carrier | – |
| 360-671 | CenturyLink / Lumen | Local phone company | – |
| 360-676 | CenturyLink / Lumen | Local phone company | – |
| 360-684 | Teleport Communications America | Internet / business phone carrier | – |
| 360-685 | Teleport Communications America | Internet / business phone carrier | – |
| 360-714 | CenturyLink / Lumen | Local phone company | – |
| 360-715 | CenturyLink / Lumen | Local phone company | – |
| 360-733 | CenturyLink / Lumen | Local phone company | – |
| 360-734 | CenturyLink / Lumen | Local phone company | – |
| 360-738 | CenturyLink / Lumen | Local phone company | – |
| 360-739 | Verizon Wireless | Mobile carrier | – |
| 360-746 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 360-752 | CenturyLink / Lumen | Local phone company | – |
| 360-756 | CenturyLink / Lumen | Local phone company | – |
| 360-758 | CenturyLink / Lumen | Local phone company | – |
| 360-778 | CenturyLink / Lumen | Local phone company | – |
| 360-781 | AT&T Mobility | Mobile carrier | 2025 |
| 360-788 | CenturyLink / Lumen | Local phone company | – |
| 360-812 | CenturyLink / Lumen | Local phone company | – |
| 360-815 | T-Mobile (including Sprint) | Mobile carrier | – |
| 360-820 | T-Mobile (including Sprint) | Mobile carrier | – |
| 360-920 | T-Mobile (including Sprint) | Mobile carrier | – |
| 360-922 | Teleport Communications America | Internet / business phone carrier | – |
| 360-927 | Verizon Wireless | Mobile carrier | – |
| 360-933 | Teleport Communications America | Internet / business phone carrier | – |
| 360-935 | Teleport Communications America | Internet / business phone carrier | – |
| 360-937 | Teleport Communications America | Internet / business phone carrier | – |
| 360-961 | AT&T Mobility | Mobile carrier | – |
| 360-966 | Ziply Fiber | Local phone company | – |
| 360-988 | Ziply Fiber | Local phone company | – |
| 564-209 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 564-213 | Onvoy | Internet / business phone carrier | – |
| 564-243 | Verizon Wireless | Mobile carrier | 2023 |
| 564-565 | Onvoy | Internet / business phone carrier | 2022 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.