NumberResearchRecent prefix assignments
369 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 307-242 | QWEST CORPORATION | 9636 | LAKE | WY | |
| 307-243 | ONVOY, LLC - WY | 450F | CASPER | WY | |
| 307-245 | RT COMMUNICATIONS | 3410 | PINEBLUFFS | WY | |
| 307-246 | RT COMMUNICATIONS | 3410 | ALBIN | WY | |
| 307-247 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASPER | WY | |
| 307-250 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CODY | WY | |
| 307-252 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | ROCK SPG | WY | |
| 307-258 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY | |
| 307-259 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY | |
| 307-260 | UNION TELEPHONE COMPANY | 013B | BIG PINEY | WY | |
| 307-261 | QWEST CORPORATION | 9636 | CASPER | WY | |
| 307-262 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY | |
| 307-265 | QWEST CORPORATION | 9636 | CASPER | WY | |
| 307-266 | QWEST CORPORATION | 9636 | CASPER | WY | |
| 307-267 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASPER | WY | |
| 307-268 | QWEST CORPORATION | 9636 | CASPER | WY | |
| 307-269 | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | WHEATLAND | WY | |
| 307-270 | UNION TELEPHONE COMPANY | 013B | COKEVILLE | WY | |
| 307-272 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CODY | WY | |
| 307-273 | CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK | 2299 | FARSON | WY | |
| 307-276 | CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK | 2299 | BIG PINEY | WY | |
| 307-279 | ALL WEST COMMUNICATIONS - WY | 2290 | COKEVILLE | WY | |
| 307-280 | UNION TELEPHONE COMPANY | 013B | FARSON | WY | |
| 307-281 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | SUNDANCE | WY | |
| 307-282 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | SUNDANCE | WY | |
| 307-283 | RANGE TEL COOP INC | 2251 | SUNDANCE | WY | |
| 307-290 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SUNDANCE | WY | |
| 307-296 | ONVOY, LLC - WY | 450F | CODY | WY | |
| 307-297 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | 1772 | GREENRIVER | WY | |
| 307-307 | WY | ||||
| 307-308 | WY | ||||
| 307-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | WY | |
| 307-313 | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | EVANSTON | WY | |
| 307-314 | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY | |
| 307-320 | UNION TELEPHONE COMPANY | 013B | RAWLINS | WY | |
| 307-321 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | RAWLINS | WY | |
| 307-322 | QWEST CORPORATION | 9636 | WHEATLAND | WY | |
| 307-324 | QWEST CORPORATION | 9636 | RAWLINS | WY | |
| 307-325 | UNION TEL. CO. | 2297 | HANNA | WY | |
| 307-326 | UNION TEL. CO. | 2297 | SARATOGA | WY | |
| 307-327 | UNION TEL. CO. | 2297 | ENCAMPMENT | WY | |
| 307-328 | QWEST CORPORATION | 9636 | RAWLINS | WY | |
| 307-329 | UNION TELEPHONE COMPANY | 013B | SARATOGA | WY | |
| 307-330 | UNION TELEPHONE COMPANY | 013B | LANDER | WY | |
| 307-331 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | WHEATLAND | WY | |
| 307-332 | QWEST CORPORATION | 9636 | LANDER | WY | |
| 307-333 | NUSO, LLC | 732J | CASPER | WY | |
| 307-334 | QWEST CORPORATION | 9636 | LUSK | WY | |
| 307-335 | QWEST CORPORATION | 9636 | LANDER | WY | |
| 307-339 | UNION TELEPHONE COMPANY | 013B | HANNA | WY |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.