NumberResearchRecent thousands-block assignments
6 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, last 30 days — NPA 313
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-11-14 | 313-855-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN4 | MI |
| 2014-11-14 | 313-855-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN4 | MI |
| 2014-11-10 | 313-699-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-699-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-699-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-699-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-699-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-699-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-699-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-699-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-699-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-699-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-707-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2014-11-10 | 313-707-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2014-11-10 | 313-707-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2014-11-10 | 313-707-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2014-11-10 | 313-707-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2014-11-10 | 313-707-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2014-11-10 | 313-707-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2014-11-10 | 313-707-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2014-11-10 | 313-707-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2014-11-10 | 313-855-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-855-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-11-10 | 313-855-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN4 | MI |
| 2014-10-28 | 313-296-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | DETROITZN5 | MI |
| 2014-10-28 | 313-329-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | DETROITZN1 | MI |
| 2014-10-28 | 313-960-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2014-10-28 | 313-960-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2014-10-28 | 313-960-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2014-10-28 | 313-960-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2014-10-28 | 313-960-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2014-10-28 | 313-960-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN1 | MI |
| 2014-10-24 | 313-395-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN6 | MI |
| 2014-10-24 | 313-403-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN6 | MI |
| 2014-10-20 | 313-558-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN6 | MI |
| 2014-10-20 | 313-558-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN6 | MI |
| 2014-10-20 | 313-558-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN6 | MI |
| 2014-10-20 | 313-558-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN6 | MI |
| 2014-10-20 | 313-558-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN6 | MI |
| 2014-10-20 | 313-558-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN6 | MI |
| 2014-10-17 | 313-365-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DETROITZN3 | MI |
| 2014-10-10 | 313-349-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | DETROITZN3 | MI |
| 2014-10-10 | 313-349-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN3 | MI |
| 2014-10-10 | 313-349-6XXX | 6000–6999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN3 | MI |
| 2014-10-10 | 313-466-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | DETROITZN2 | MI |
| 2014-10-10 | 313-921-6XXX | 6000–6999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN2 | MI |
| 2014-10-10 | 313-922-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN2 | MI |
| 2014-10-10 | 313-960-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN1 | MI |
| 2014-10-10 | 313-960-8XXX | 8000–8999 | Assigned | ONVOY, LLCV - MI | 543C | DETROITZN1 | MI |
| 2014-10-07 | 313-558-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | DETROITZN6 | MI |
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.