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 |
|---|---|---|---|---|---|---|---|
| 2025-08-19 | 517-969-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MASON | MI |
| 2025-08-12 | 517-514-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | CLINTON | MI |
| 2025-08-11 | 517-730-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-08-11 | 517-744-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-08-11 | 517-744-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-08-07 | 517-551-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | FOWLERVL | MI |
| 2025-08-05 | 517-995-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | JONESVILLE | MI |
| 2025-07-10 | 517-259-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | JACKSON | MI |
| 2025-07-07 | 517-595-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WALDRON | MI |
| 2025-07-07 | 517-696-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PRATTVILLE | MI |
| 2025-07-07 | 517-855-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-07-07 | 517-855-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-06-30 | 517-298-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MORENCI | MI |
| 2025-06-25 | 517-259-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | JACKSON | MI |
| 2025-06-20 | 517-259-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2025-06-18 | 517-774-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | COLDWTR LK | MI |
| 2025-06-17 | 517-566-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SUNFIELD | MI |
| 2025-06-17 | 517-625-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PERRY | MI |
| 2025-06-16 | 517-418-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOMER | MI |
| 2025-06-16 | 517-468-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BELL OAK | MI |
| 2025-06-16 | 517-510-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CLAYTON | MI |
| 2025-06-16 | 517-628-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ONONDAGA | MI |
| 2025-06-16 | 517-733-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ADDISON | MI |
| 2025-06-11 | 517-259-7XXX | 7000–7999 | Assigned | NUSO, LLC | 732J | JACKSON | MI |
| 2025-06-11 | 517-259-9XXX | 9000–9999 | Assigned | NUSO, LLC | 732J | JACKSON | MI |
| 2025-05-30 | 517-692-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | SPRINGPORT | MI |
| 2025-05-22 | 517-595-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | WALDRON | MI |
| 2025-05-22 | 517-736-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | COLDWATER | MI |
| 2025-05-13 | 517-744-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-05-07 | 517-283-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | READING | MI |
| 2025-05-06 | 517-297-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HILLSDALE | MI |
| 2025-05-02 | 517-531-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PARMA | MI |
| 2025-05-02 | 517-565-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FITCHBURG | MI |
| 2025-05-02 | 517-666-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GRANDLEDGE | MI |
| 2025-05-02 | 517-765-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BURLINGTON | MI |
| 2025-05-02 | 517-767-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TEKONSHA | MI |
| 2025-05-02 | 517-991-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CAMDEN | MI |
| 2025-05-02 | 517-992-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WILLIAMSTN | MI |
| 2025-04-14 | 517-409-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BLISSFIELD | MI |
| 2025-04-07 | 517-494-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ALBION | MI |
| 2025-04-07 | 517-649-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MULLIKEN | MI |
| 2025-04-01 | 517-826-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | JONESVILLE | MI |
| 2025-03-27 | 517-384-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | CHARLOTTE | MI |
| 2025-03-24 | 517-259-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2025-03-10 | 517-518-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOWELL | MI |
| 2025-03-10 | 517-726-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | VERMONTVL | MI |
| 2025-03-06 | 517-465-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | ALBION | MI |
| 2025-02-27 | 517-657-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LANSING | MI |
| 2025-02-27 | 517-730-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LANSING | MI |
| 2025-02-25 | 517-259-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | JACKSON | 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.