NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 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 |
| 2023-04-04 | 307-990-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | LANDER | WY |
| 2022-08-11 | 307-533-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | SHERIDAN | WY |
| 2022-06-29 | 307-374-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | ROCK SPG | WY |
| 2022-06-29 | 307-387-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | GILLETTE | WY |
| 2022-06-29 | 307-395-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | LARAMIE | WY |
| 2022-06-29 | 307-458-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | CASPER | WY |
| 2022-06-29 | 307-556-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | RIVERTON | WY |
| 2022-03-02 | 307-888-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | OLDFATHFUL | WY |
| 2021-11-03 | 307-384-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | AFTON | WY |
| 2021-11-03 | 307-384-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | AFTON | WY |
| 2021-11-01 | 307-216-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | LUSK | WY |
| 2021-11-01 | 307-216-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | LUSK | WY |
| 2021-11-01 | 307-667-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | RAWLINS | WY |
| 2021-11-01 | 307-667-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | RAWLINS | WY |
| 2021-10-28 | 307-291-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | CODY | WY |
| 2021-10-28 | 307-291-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | CODY | WY |
| 2021-10-28 | 307-440-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | BASIN | WY |
| 2021-10-28 | 307-440-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | BASIN | WY |
| 2021-08-17 | 307-342-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | JACKSON | WY |
| 2021-08-17 | 307-342-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | JACKSON | WY |
| 2019-06-20 | 307-443-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | CHEYENNE | WY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.