NumberResearchRecent thousands-block assignments
0 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, all time — NPA 712
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-02-08 | 712-570-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SIOUX CITY | IA |
| 2024-02-08 | 712-570-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SIOUX CITY | IA |
| 2024-02-08 | 712-570-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | SIOUX CITY | IA |
| 2024-02-08 | 712-570-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | SIOUX CITY | IA |
| 2022-11-08 | 712-513-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | CARROLL | IA |
| 2022-10-10 | 712-399-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | MALVERN | IA |
| 2022-09-28 | 712-350-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | HAMBURG | IA |
| 2022-08-29 | 712-638-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | STORM LAKE | IA |
| 2022-08-29 | 712-966-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | LE MARS | IA |
| 2022-08-07 | 712-232-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | SPENCER | IA |
| 2022-08-07 | 712-321-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | CHEROKEE | IA |
| 2022-08-07 | 712-398-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | ONAWA | IA |
| 2022-07-12 | 712-414-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | RED OAK | IA |
| 2022-07-12 | 712-713-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | COUNCILBLF | IA |
| 2021-04-02 | 712-710-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SIOUX CITY | IA |
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.