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 320
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-05-18 | 320-401-0XXX | 0000–0999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | MAPLE LAKE | MN |
| 2020-08-12 | 320-946-0XXX | 0000–0999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | SACREDHERT | MN |
| 2016-01-27 | 320-261-5XXX | 5000–5999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | ANNANDALE | MN |
| 2011-10-06 | 320-206-0XXX | 0000–0999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | RICHMOND | MN |
| 2011-10-06 | 320-302-0XXX | 0000–0999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | ROYALTON | MN |
| 2011-09-28 | 320-228-0XXX | 0000–0999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | HOLDINGFD | MN |
| 2011-09-20 | 320-271-3XXX | 3000–3999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | ST JOSEPH | MN |
| 2011-09-20 | 320-362-3XXX | 3000–3999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | MILACA | MN |
| 2011-09-20 | 320-364-1XXX | 1000–1999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | MORA | MN |
| 2011-09-20 | 320-443-0XXX | 0000–0999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | ST CLOUD | MN |
| 2011-09-20 | 320-468-7XXX | 7000–7999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | PIERZ | MN |
| 2011-09-20 | 320-496-1XXX | 1000–1999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | BRAHAM | MN |
| 2011-09-20 | 320-558-1XXX | 1000–1999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | CLEARWATER | MN |
| 2011-09-20 | 320-686-0XXX | 0000–0999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | COLDSPRING | MN |
| 2011-09-20 | 320-743-0XXX | 0000–0999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | CLEAR LAKE | MN |
| 2011-09-20 | 320-844-1XXX | 1000–1999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | AVON | MN |
| 2011-09-12 | 320-294-7XXX | 7000–7999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | FORESTON | MN |
| 2011-09-06 | 320-272-1XXX | 1000–1999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | OGILVIE | MN |
| 2011-09-06 | 320-322-5XXX | 5000–5999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | PINE CITY | MN |
| 2011-09-06 | 320-566-1XXX | 1000–1999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | RUSH CITY | MN |
| 2011-08-29 | 320-818-1XXX | 1000–1999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | FOLEY | MN |
| 2008-09-12 | 320-209-5XXX | 5000–5999 | Assigned | MIDCONTINENT COMMUNICATIONS - MN | 429A | MORA | MN |
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.