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 319
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-31 | 319-381-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | IOWA CITY | IA |
| 2024-01-31 | 319-381-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | IOWA CITY | IA |
| 2024-01-31 | 319-471-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | IOWA CITY | IA |
| 2024-01-31 | 319-600-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | IOWA CITY | IA |
| 2023-04-04 | 319-910-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | PARKERSBG | IA |
| 2022-11-17 | 319-942-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | HILLSBORO | IA |
| 2022-10-21 | 319-264-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | OELWEIN | IA |
| 2022-10-21 | 319-500-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | VINTON | IA |
| 2022-10-17 | 319-246-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | FT MADISON | IA |
| 2022-10-17 | 319-315-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | ANAMOSA | IA |
| 2022-08-07 | 319-340-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | WATERLOO | IA |
| 2022-08-07 | 319-380-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | BURLINGTON | IA |
| 2022-08-07 | 319-767-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | KEOKUK | IA |
| 2022-07-12 | 319-222-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | CEDARFALLS | IA |
| 2022-07-12 | 319-407-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | WAVERLY | IA |
| 2022-07-12 | 319-458-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | WASHINGTON | IA |
| 2022-06-29 | 319-265-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | CEDAR RPDS | IA |
| 2019-06-24 | 319-867-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | IOWA CITY | IA |
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.