NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/23/2026
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, all time — NPA 307
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-01-06 | 307-482-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | WHEATLAND | WY |
| 2026-01-06 | 307-485-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2026-01-06 | 307-485-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2025-12-03 | 307-435-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-12-03 | 307-533-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-11-26 | 307-454-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERTON | WY |
| 2025-11-06 | 307-295-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRINGTON | WY |
| 2025-11-06 | 307-385-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2025-11-06 | 307-385-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2025-11-06 | 307-478-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LA GRANGE | WY |
| 2025-10-31 | 307-428-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DOUGLAS | WY |
| 2025-10-24 | 307-420-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LINGLE | WY |
| 2025-10-24 | 307-533-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-10-24 | 307-998-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2025-10-22 | 307-478-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LA GRANGE | WY |
| 2025-10-15 | 307-453-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | WY |
| 2025-10-01 | 307-507-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-10-01 | 307-507-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-10-01 | 307-507-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-10-01 | 307-507-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-09-12 | 307-485-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2025-09-12 | 307-485-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CASPER | WY |
| 2025-08-15 | 307-426-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-08-15 | 307-426-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | WY |
| 2025-08-15 | 307-426-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHEYENNE | 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 |
| 2025-06-04 | 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 |
| 2025-05-21 | 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 |
| 2025-05-09 | 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 |
| 2025-04-25 | 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 |
| 2025-04-08 | 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 |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.