NumberResearchRecent thousands-block assignments
0 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, all time — NPA 517
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-18 | 517-672-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOWELL | MI |
| 2026-05-11 | 517-568-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOMER | MI |
| 2026-04-07 | 517-728-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TEKONSHA | MI |
| 2026-03-05 | 517-283-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | READING | MI |
| 2026-03-05 | 517-625-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PERRY | MI |
| 2026-03-05 | 517-910-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ONONDAGA | 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 |
| 2026-01-13 | 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 |
| 2025-12-11 | 517-518-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOWELL | 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 |
| 2025-06-18 | 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 |
| 2025-05-07 | 517-283-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | READING | 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 |
| 2025-03-10 | 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 |
| 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 |
| 2024-10-22 | 517-528-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LANSING | MI |
| 2024-01-12 | 517-440-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LANSING | MI |
| 2023-10-16 | 517-268-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOLT | MI |
| 2023-05-25 | 517-908-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LANSING | MI |
| 2023-04-04 | 517-268-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOLT | MI |
| 2022-11-17 | 517-391-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LANSING | MI |
| 2022-09-08 | 517-268-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOLT | MI |
| 2022-04-07 | 517-319-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LANSING | MI |
| 2021-09-29 | 517-664-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LANSING | MI |
| 2021-06-15 | 517-662-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ADRIAN | MI |
| 2021-04-07 | 517-649-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MULLIKEN | MI |
| 2021-04-07 | 517-769-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JACKSON | MI |
| 2021-02-24 | 517-855-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | 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.