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
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-04-08 | 307-482-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | WHEATLAND | WY |
| 2025-04-03 | 307-412-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-04-03 | 307-412-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-04-03 | 307-412-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-04-03 | 307-412-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-04-03 | 307-412-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-04-03 | 307-507-1XXX | 1000–1999 | Assigned | WIDE VOICE, LLC - WY | 953H | CHEYENNE | WY |
| 2025-03-24 | 307-420-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LINGLE | WY |
| 2025-03-24 | 307-478-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LA GRANGE | WY |
| 2025-03-18 | 307-396-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WY | 450F | GREENRIVER | WY |
| 2025-03-18 | 307-434-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WY | 450F | GILLETTE | WY |
| 2025-03-18 | 307-442-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | EVANSTON | WY |
| 2025-03-18 | 307-474-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | CODY | WY |
| 2025-03-18 | 307-476-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2025-03-18 | 307-529-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WY | 450F | CHEYENNE | WY |
| 2025-03-14 | 307-449-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ROCK SPG | WY |
| 2025-02-20 | 307-288-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EVANSTON | WY |
| 2025-02-19 | 307-346-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-02-19 | 307-346-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-02-19 | 307-346-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-02-12 | 307-479-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | POWELL | WY |
| 2025-02-05 | 307-396-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WY | 450F | GREENRIVER | WY |
| 2025-02-05 | 307-428-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | DOUGLAS | WY |
| 2025-02-05 | 307-453-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | JACKSON | WY |
| 2025-02-05 | 307-478-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LA GRANGE | WY |
| 2025-01-24 | 307-310-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2025-01-09 | 307-395-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2025-01-09 | 307-410-7XXX | 7000–7999 | Assigned | ONVOY, LLC - WY | 450F | POWELL | WY |
| 2025-01-09 | 307-476-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | LARAMIE | WY |
| 2025-01-07 | 307-998-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-01-07 | 307-998-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-01-07 | 307-998-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-01-03 | 307-292-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA WY-LLC | 879G | CHEYENNE | WY |
| 2025-01-03 | 307-292-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA WY-LLC | 879G | CHEYENNE | WY |
| 2025-01-02 | 307-757-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | CHEYENNE | WY |
| 2024-12-23 | 307-269-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WHEATLAND | WY |
| 2024-12-23 | 307-357-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LARAMIE | WY |
| 2024-12-23 | 307-396-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GREENRIVER | WY |
| 2024-12-23 | 307-445-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMMERER | WY |
| 2024-12-23 | 307-449-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ROCK SPG | WY |
| 2024-12-20 | 307-357-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LARAMIE | WY |
| 2024-12-20 | 307-434-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GILLETTE | WY |
| 2024-12-20 | 307-471-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LUSK | WY |
| 2024-12-17 | 307-424-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LAKE | WY |
| 2024-12-17 | 307-427-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MAMMOTH | WY |
| 2024-12-17 | 307-430-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | OLDFATHFUL | WY |
| 2024-12-13 | 307-241-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WHEATLAND | WY |
| 2024-12-13 | 307-318-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WRIGHT | WY |
| 2024-12-12 | 307-396-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WY | 450F | GREENRIVER | WY |
| 2024-12-12 | 307-474-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WY | 450F | CODY | 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.