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 412
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-08-30 | 412-428-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN14 | PA |
| 2022-08-30 | 412-428-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN14 | PA |
| 2022-08-30 | 412-479-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN12 | PA |
| 2022-08-30 | 412-827-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN21 | PA |
| 2022-08-30 | 412-827-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN21 | PA |
| 2022-07-27 | 412-357-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN22 | PA |
| 2022-07-27 | 412-358-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN17 | PA |
| 2021-08-04 | 412-542-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN10 | PA |
| 2021-08-04 | 412-763-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN10 | PA |
| 2021-08-04 | 412-763-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | PTGSBNZN10 | PA |
| 2021-06-17 | 412-947-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | PTTSBGZON6 | PA |
| 2021-06-17 | 412-947-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | PTTSBGZON6 | PA |
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.