NumberResearchRecent thousands-block assignments
10 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2026-02-20 | 517-699-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOLT | MI |
| 2026-02-19 | 517-686-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ALBION | MI |
| 2026-02-19 | 517-849-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JONESVILLE | MI |
| 2026-02-11 | 517-441-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EATON RPD | MI |
| 2026-02-09 | 517-550-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | DIMONDALE | MI |
| 2026-02-09 | 517-550-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | DIMONDALE | MI |
| 2026-02-09 | 517-550-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | DIMONDALE | MI |
| 2026-02-03 | 517-307-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2026-02-03 | 517-307-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2026-02-03 | 517-770-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2026-02-03 | 517-770-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2026-02-03 | 517-770-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2026-02-03 | 517-855-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2026-01-29 | 517-385-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | LANSING | MI |
| 2026-01-22 | 517-212-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HILLSDALE | MI |
| 2026-01-22 | 517-666-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDLEDGE | MI |
| 2026-01-16 | 517-307-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | JACKSON | MI |
| 2026-01-16 | 517-307-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | JACKSON | MI |
| 2026-01-16 | 517-307-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | JACKSON | MI |
| 2026-01-13 | 517-222-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DANSVILLE | MI |
| 2026-01-13 | 517-565-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FITCHBURG | MI |
| 2026-01-13 | 517-765-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BURLINGTON | MI |
| 2025-12-23 | 517-695-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RANSOM | MI |
| 2025-12-17 | 517-352-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | BATH | MI |
| 2025-12-16 | 517-384-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHARLOTTE | MI |
| 2025-12-15 | 517-686-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ALBION | MI |
| 2025-12-11 | 517-518-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOWELL | MI |
| 2025-12-05 | 517-299-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LANSING | MI |
| 2025-12-05 | 517-299-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LANSING | MI |
| 2025-11-20 | 517-361-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | NASHVILLE | MI |
| 2025-11-19 | 517-384-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHARLOTTE | MI |
| 2025-11-19 | 517-686-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ALBION | MI |
| 2025-11-18 | 517-378-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | POTTERVL | MI |
| 2025-11-18 | 517-500-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | SUNFIELD | MI |
| 2025-11-13 | 517-384-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHARLOTTE | MI |
| 2025-11-12 | 517-345-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | DIMONDALE | MI |
| 2025-10-22 | 517-770-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-10-22 | 517-855-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LANSING | MI |
| 2025-10-17 | 517-861-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOWELL | MI |
| 2025-10-13 | 517-553-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOWELL | MI |
| 2025-10-06 | 517-307-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2025-09-18 | 517-996-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | WILLIAMSTN | MI |
| 2025-09-04 | 517-326-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LANSING | MI |
| 2025-09-04 | 517-326-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LANSING | MI |
| 2025-09-02 | 517-384-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHARLOTTE | MI |
| 2025-08-27 | 517-392-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JACKSON | MI |
| 2025-08-26 | 517-891-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FRONTIER | MI |
| 2025-08-26 | 517-991-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CAMDEN | MI |
| 2025-08-22 | 517-370-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MONTGOMERY | MI |
| 2025-08-22 | 517-991-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | CAMDEN | MI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.