NumberResearchRecent thousands-block assignments
21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 307
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-12-18 | 307-301-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CASPER | WY |
| 2023-12-18 | 307-309-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | GLENROCK | WY |
| 2023-12-18 | 307-374-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | ROCK SPG | WY |
| 2023-12-15 | 307-823-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2023-12-15 | 307-823-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2023-12-14 | 307-533-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2023-12-14 | 307-533-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2023-12-13 | 307-415-4XXX | 4000–4999 | Assigned | NUSO, LLC | 732J | CHEYENNE | WY |
| 2023-12-13 | 307-415-6XXX | 6000–6999 | Assigned | NUSO, LLC | 732J | CHEYENNE | WY |
| 2023-12-11 | 307-293-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WY | 450F | GUERNSEY | WY |
| 2023-12-11 | 307-295-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | TORRINGTON | WY |
| 2023-12-11 | 307-355-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | LA GRANGE | WY |
| 2023-12-11 | 307-420-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | LINGLE | WY |
| 2023-12-11 | 307-424-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | LAKE | WY |
| 2023-12-11 | 307-427-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | MAMMOTH | WY |
| 2023-12-11 | 307-430-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | OLDFATHFUL | WY |
| 2023-12-11 | 307-667-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | RAWLINS | WY |
| 2023-12-11 | 307-770-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | FARSON | WY |
| 2023-12-11 | 307-881-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | WHEATLAND | WY |
| 2023-12-07 | 307-418-5XXX | 5000–5999 | Assigned | SILVER STAR TELEPHONE COMPANY, INC. - WY | 110G | JACKSON | WY |
| 2023-12-07 | 307-418-6XXX | 6000–6999 | Assigned | SILVER STAR TELEPHONE COMPANY, INC. - WY | 110G | JACKSON | WY |
| 2023-12-01 | 307-428-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | DOUGLAS | WY |
| 2023-11-28 | 307-334-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | LUSK | WY |
| 2023-11-28 | 307-340-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | LUSK | WY |
| 2023-11-28 | 307-384-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | AFTON | WY |
| 2023-11-28 | 307-384-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | AFTON | WY |
| 2023-11-28 | 307-384-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | AFTON | WY |
| 2023-11-28 | 307-418-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | JACKSON | WY |
| 2023-11-28 | 307-418-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | JACKSON | WY |
| 2023-11-28 | 307-419-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | CODY | WY |
| 2023-11-28 | 307-419-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | CODY | WY |
| 2023-11-28 | 307-419-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | CODY | WY |
| 2023-11-28 | 307-990-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | LANDER | WY |
| 2023-11-28 | 307-990-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | LANDER | WY |
| 2023-11-27 | 307-301-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASPER | WY |
| 2023-11-20 | 307-241-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | WHEATLAND | WY |
| 2023-11-08 | 307-346-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2023-11-08 | 307-400-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHEYENNE | WY |
| 2023-11-08 | 307-400-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHEYENNE | WY |
| 2023-11-08 | 307-400-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHEYENNE | WY |
| 2023-11-08 | 307-400-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHEYENNE | WY |
| 2023-11-08 | 307-400-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHEYENNE | WY |
| 2023-10-17 | 307-295-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WY | 9416 | TORRINGTON | WY |
| 2023-10-12 | 307-221-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHEYENNE | WY |
| 2023-10-10 | 307-301-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2023-10-09 | 307-301-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CASPER | WY |
| 2023-10-02 | 307-357-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2023-09-29 | 307-393-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | EVANSTON | WY |
| 2023-09-29 | 307-393-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | EVANSTON | WY |
| 2023-09-29 | 307-393-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | EVANSTON | WY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.