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 |
|---|---|---|---|---|---|---|---|
| 2025-06-20 | 307-373-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GREYBULL | WY |
| 2025-06-20 | 307-388-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WORLAND | WY |
| 2025-06-20 | 307-391-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MOORCROFT | WY |
| 2025-06-20 | 307-404-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MEDICINBOW | WY |
| 2025-06-20 | 307-440-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BASIN | WY |
| 2025-06-20 | 307-442-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EVANSTON | WY |
| 2025-06-20 | 307-447-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SARATOGA | WY |
| 2025-06-20 | 307-474-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CODY | WY |
| 2025-06-20 | 307-921-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | THERMOPOLS | WY |
| 2025-06-20 | 307-949-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEWCASTLE | WY |
| 2025-06-18 | 307-453-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2025-06-18 | 307-453-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2025-06-17 | 307-451-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | ROCK SPG | WY |
| 2025-06-04 | 307-474-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CODY | WY |
| 2025-05-30 | 307-295-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRINGTON | WY |
| 2025-05-30 | 307-428-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | DOUGLAS | WY |
| 2025-05-30 | 307-454-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERTON | WY |
| 2025-05-30 | 307-998-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-05-30 | 307-998-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-05-30 | 307-998-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-05-28 | 307-629-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | NEWCASTLE | WY |
| 2025-05-21 | 307-346-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-05-21 | 307-346-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-05-21 | 307-346-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-05-21 | 307-412-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-05-21 | 307-412-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-05-15 | 307-485-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CASPER | WY |
| 2025-05-09 | 307-454-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERTON | WY |
| 2025-05-06 | 307-485-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2025-05-06 | 307-485-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2025-05-02 | 307-412-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA WY-LLC | 879G | CHEYENNE | WY |
| 2025-04-30 | 307-479-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | POWELL | WY |
| 2025-04-30 | 307-479-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | POWELL | WY |
| 2025-04-30 | 307-483-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RAWLINS | WY |
| 2025-04-30 | 307-483-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RAWLINS | WY |
| 2025-04-25 | 307-420-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LINGLE | WY |
| 2025-04-25 | 307-428-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | DOUGLAS | WY |
| 2025-04-25 | 307-478-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LA GRANGE | WY |
| 2025-04-25 | 307-478-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LA GRANGE | WY |
| 2025-04-16 | 307-434-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2025-04-16 | 307-451-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | ROCK SPG | WY |
| 2025-04-16 | 307-476-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2025-04-14 | 307-318-7XXX | 7000–7999 | Assigned | AIRUS, INC. - WY | 581H | WRIGHT | WY |
| 2025-04-14 | 307-419-3XXX | 3000–3999 | Assigned | AIRUS, INC. - WY | 581H | CODY | WY |
| 2025-04-14 | 307-479-1XXX | 1000–1999 | Assigned | AIRUS, INC. - WY | 581H | POWELL | WY |
| 2025-04-09 | 307-388-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WORLAND | WY |
| 2025-04-08 | 307-428-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | DOUGLAS | WY |
| 2025-04-08 | 307-452-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2025-04-08 | 307-452-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WY | 450F | CASPER | WY |
| 2025-04-08 | 307-453-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | JACKSON | 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.