NumberResearchRecent thousands-block assignments
10 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 517
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-02-06 | 517-451-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | BRITTON | MI |
| 2007-02-06 | 517-522-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | GRASS LAKE | MI |
| 2007-02-06 | 517-541-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | CHARLOTTE | MI |
| 2007-02-06 | 517-554-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | ALBION | MI |
| 2007-02-06 | 517-641-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | BATH | MI |
| 2007-02-06 | 517-646-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | DIMONDALE | MI |
| 2007-02-06 | 517-672-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | HOWELL | MI |
| 2007-02-06 | 517-682-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | BLISSFIELD | MI |
| 2007-02-06 | 517-709-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | HOLT | MI |
| 2007-02-06 | 517-748-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | JACKSON | MI |
| 2007-02-06 | 517-759-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | ADRIAN | MI |
| 2007-02-06 | 517-765-6XXX | 6000–6999 | Assigned | ONVOY, LLCV - MI | 543C | BURLINGTON | MI |
| 2007-02-06 | 517-878-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | LESLIE | MI |
| 2007-02-06 | 517-915-1XXX | 1000–1999 | Assigned | ONVOY, LLCV - MI | 543C | FOWLERVL | MI |
| 2007-02-06 | 517-925-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | GRANDLEDGE | MI |
| 2007-02-06 | 517-968-0XXX | 0000–0999 | Assigned | ONVOY, LLCV - MI | 543C | DANSVILLE | MI |
| 2007-02-06 | 517-969-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | MASON | MI |
| 2007-02-02 | 517-708-2XXX | 2000–2999 | Assigned | ONVOY, LLCV - MI | 543C | LANSING | MI |
| 2007-02-02 | 517-708-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | LANSING | MI |
| 2007-02-02 | 517-708-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | LANSING | MI |
| 2007-01-30 | 517-677-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | COLDWATER | MI |
| 2007-01-30 | 517-763-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | LANSING | MI |
| 2007-01-30 | 517-936-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | JACKSON | MI |
| 2007-01-30 | 517-936-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | JACKSON | MI |
| 2007-01-30 | 517-993-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | LANSING | MI |
| 2007-01-30 | 517-993-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | LANSING | MI |
| 2007-01-24 | 517-583-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | TEKONSHA | MI |
| 2007-01-24 | 517-705-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BURLINGTON | MI |
| 2007-01-24 | 517-858-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BRONSON | MI |
| 2007-01-23 | 517-444-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CHARLOTTE | MI |
| 2007-01-17 | 517-238-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | COLDWTR LK | MI |
| 2007-01-17 | 517-376-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HOWELL | MI |
| 2007-01-17 | 517-639-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | QUINCY | MI |
| 2007-01-16 | 517-759-3XXX | 3000–3999 | Assigned | DEERFIELD FARMERS' TELEPHONE COMPANY - MI | 558A | ADRIAN | MI |
| 2007-01-11 | 517-759-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ADRIAN | MI |
| 2007-01-11 | 517-918-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ADRIAN | MI |
| 2007-01-09 | 517-315-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2007-01-09 | 517-315-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2007-01-09 | 517-518-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOWELL | MI |
| 2007-01-05 | 517-924-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | COLDWATER | MI |
| 2006-12-20 | 517-763-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | LANSING | MI |
| 2006-12-20 | 517-763-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | LANSING | MI |
| 2006-12-20 | 517-763-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | LANSING | MI |
| 2006-12-20 | 517-763-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | LANSING | MI |
| 2006-12-19 | 517-455-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2006-12-15 | 517-977-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | LANSING | MI |
| 2006-12-13 | 517-918-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ADRIAN | MI |
| 2006-11-29 | 517-588-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | CHARLOTTE | MI |
| 2006-11-29 | 517-588-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | CHARLOTTE | MI |
| 2006-11-27 | 517-483-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | 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.