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 |
|---|---|---|---|---|---|---|---|
| 2025-02-25 | 517-259-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | JACKSON | MI |
| 2025-02-20 | 517-380-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOWELL | MI |
| 2025-02-20 | 517-633-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ADRIAN | MI |
| 2025-02-19 | 517-384-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CHARLOTTE | MI |
| 2025-02-19 | 517-384-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CHARLOTTE | MI |
| 2025-02-06 | 517-384-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CHARLOTTE | MI |
| 2025-02-06 | 517-384-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CHARLOTTE | MI |
| 2025-01-28 | 517-769-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | JACKSON | MI |
| 2025-01-15 | 517-314-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2025-01-13 | 517-289-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-01-13 | 517-329-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-01-13 | 517-329-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-01-13 | 517-329-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-01-13 | 517-440-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-01-13 | 517-440-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-01-03 | 517-362-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MASON | MI |
| 2024-12-30 | 517-746-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | COLDWATER | MI |
| 2024-12-26 | 517-239-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | DE WITT | MI |
| 2024-12-20 | 517-633-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | ADRIAN | MI |
| 2024-12-16 | 517-315-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2024-12-09 | 517-551-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | FOWLERVL | MI |
| 2024-12-04 | 517-616-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DIMONDALE | MI |
| 2024-12-04 | 517-797-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HILLSDALE | MI |
| 2024-12-03 | 517-237-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LANSING | MI |
| 2024-12-03 | 517-246-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LANSING | MI |
| 2024-12-03 | 517-276-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | HUDSON | MI |
| 2024-11-26 | 517-291-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ADRIAN | MI |
| 2024-11-23 | 517-299-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | LANSING | MI |
| 2024-11-23 | 517-746-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | COLDWATER | MI |
| 2024-11-20 | 517-344-8XXX | 8000–8999 | Assigned | NUSO, LLC | 478J | JACKSON | MI |
| 2024-11-15 | 517-275-8XXX | 8000–8999 | Assigned | WIRETAP TELECOM, LLC. | 733J | LANSING | MI |
| 2024-11-13 | 517-746-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | COLDWATER | MI |
| 2024-10-23 | 517-239-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DE WITT | MI |
| 2024-10-23 | 517-384-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHARLOTTE | MI |
| 2024-10-23 | 517-633-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ADRIAN | MI |
| 2024-10-22 | 517-246-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | LANSING | MI |
| 2024-10-22 | 517-528-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LANSING | MI |
| 2024-10-18 | 517-770-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2024-10-18 | 517-770-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2024-10-17 | 517-219-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | FOWLERVL | MI |
| 2024-10-17 | 517-344-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | JACKSON | MI |
| 2024-10-17 | 517-344-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | JACKSON | MI |
| 2024-10-14 | 517-343-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | ALBION | MI |
| 2024-10-14 | 517-365-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | WEBBERVL | MI |
| 2024-10-14 | 517-698-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | NORTHADAMS | MI |
| 2024-10-02 | 517-855-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2024-10-01 | 517-362-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | MASON | MI |
| 2024-09-30 | 517-436-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SAND CREEK | MI |
| 2024-09-30 | 517-510-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLAYTON | MI |
| 2024-09-30 | 517-837-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | TECUMSEH | 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.