ONVOY, LLC - WY
40 prefixes in 307 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 307-218 | SHERIDAN | 450F | 2019-08-13 | Yes |
| 307-227 | MAMMOTH | 450F | — | Yes |
| 307-243 | CASPER | 450F | — | Yes |
| 307-293 | GUERNSEY | 450F | 2021-03-02 | Yes |
| 307-295 | TORRINGTON | 450F | 2023-09-13 | Yes |
| 307-296 | CODY | 450F | — | Yes |
| 307-300 | POWELL | 450F | 2019-10-10 | Yes |
| 307-316 | CHEYENNE | 450F | 2006-03-20 | Yes |
| 307-317 | CHEYENNE | 450F | 2017-05-22 | Yes |
| 307-342 | JACKSON | 450F | — | Yes |
| 307-357 | LARAMIE | 450F | 2023-10-01 | Yes |
| 307-372 | DOUGLAS | 450F | 2020-08-10 | Yes |
| 307-405 | WBLLFOURCH | 450F | 2023-05-24 | Yes |
| 307-407 | WSPEARFISH | 450F | 2020-08-10 | Yes |
| 307-417 | RAWLINS | 450F | — | Yes |
| 307-420 | LINGLE | 450F | 2023-05-24 | Yes |
| 307-424 | LAKE | 450F | 2023-05-24 | Yes |
| 307-427 | MAMMOTH | 450F | 2023-05-24 | Yes |
| 307-430 | OLDFATHFUL | 450F | 2023-12-11 | Yes |
| 307-434 | GILLETTE | 450F | 2024-02-05 | Yes |
| 307-442 | EVANSTON | 450F | 2024-02-29 | Yes |
| 307-445 | KEMMERER | 450F | 2021-02-05 | Yes |
| 307-446 | WSPEARFISH | 450F | 2023-05-24 | Yes |
| 307-452 | CASPER | 450F | 2024-05-30 | Yes |
| 307-453 | JACKSON | 450F | 2024-06-06 | Yes |
| 307-454 | RIVERTON | 450F | 2024-06-07 | Yes |
| 307-474 | CODY | 450F | 2024-12-12 | Yes |
| 307-476 | LARAMIE | 450F | 2025-01-09 | Yes |
| 307-479 | POWELL | 450F | 2025-02-12 | Yes |
| 307-481 | LUSK | 450F | 2007-03-14 | Yes |
| 307-500 | BORDER | 450F | 2021-02-05 | Yes |
| 307-529 | CHEYENNE | 450F | 2009-08-25 | Yes |
| 307-554 | GLENROCK | 450F | — | Yes |
| 307-556 | RIVERTON | 450F | 2021-02-05 | Yes |
| 307-667 | RAWLINS | 450F | 2021-02-28 | Yes |
| 307-785 | WBLLFOURCH | 450F | 2017-04-19 | Yes |
| 307-800 | KEMMERER | 450F | 2012-11-19 | Yes |
| 307-910 | CHEYENNE | 450F | 2021-04-23 | Yes |
| 307-996 | CHEYENNE | 450F | — | Yes |
| 307-998 | SHERIDAN | 450F | 2024-06-14 | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.