NumberResearchRecent thousands-block assignments
0 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, all time — NPA 231
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-05-11 | 231-643-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MORLEY | MI |
| 2026-04-07 | 231-823-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | STANWOOD | MI |
| 2026-04-07 | 231-852-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LUDINGTON | MI |
| 2026-03-05 | 231-433-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MOORESTOWN | MI |
| 2026-02-19 | 231-865-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FRUITPORT | MI |
| 2026-01-13 | 231-424-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CARR | MI |
| 2025-09-18 | 231-552-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHARLEVOIX | MI |
| 2025-07-07 | 231-646-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ELLSWORTH | MI |
| 2025-07-03 | 231-643-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MORLEY | MI |
| 2025-07-03 | 231-871-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BEULAH | MI |
| 2025-07-03 | 231-912-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | REED CITY | MI |
| 2025-06-18 | 231-210-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ST JAMES | MI |
| 2025-06-18 | 231-223-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | OLDMISSION | MI |
| 2025-06-18 | 231-320-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TRCHRIVBDG | MI |
| 2025-06-18 | 231-376-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TWIN LAKE | MI |
| 2025-06-18 | 231-404-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | STANWOOD | MI |
| 2025-06-18 | 231-431-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CLAM RIVER | MI |
| 2025-06-18 | 231-433-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MOORESTOWN | MI |
| 2025-06-18 | 231-500-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WHITEHALL | MI |
| 2025-06-18 | 231-663-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MESICK | MI |
| 2025-06-18 | 231-688-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MERRITT | MI |
| 2025-06-18 | 231-772-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WELLSTON | MI |
| 2025-06-18 | 231-852-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LUDINGTON | MI |
| 2025-06-18 | 231-937-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOWARDCITY | MI |
| 2025-06-18 | 231-999-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CENTRAL LK | MI |
| 2025-06-17 | 231-400-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ALANSON | MI |
| 2025-05-08 | 231-866-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SUTTONSBAY | MI |
| 2025-05-07 | 231-678-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BRETHREN | MI |
| 2025-05-02 | 231-424-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CARR | MI |
| 2025-03-10 | 231-550-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PETOSKEY | MI |
| 2024-10-16 | 231-829-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TUSTIN | MI |
| 2024-09-16 | 231-643-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MORLEY | MI |
| 2024-09-16 | 231-912-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | REED CITY | MI |
| 2024-04-29 | 231-968-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CADILLAC | MI |
| 2024-01-17 | 231-643-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MORLEY | MI |
| 2024-01-12 | 231-279-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BIG RAPIDS | MI |
| 2024-01-12 | 231-371-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TUSTIN | MI |
| 2024-01-12 | 231-925-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SCOTTVILLE | MI |
| 2024-01-10 | 231-224-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FREMONT | MI |
| 2024-01-10 | 231-270-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BOYNE CITY | MI |
| 2024-01-10 | 231-284-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MANISTEE | MI |
| 2024-01-10 | 231-379-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ONEKAMA | MI |
| 2024-01-10 | 231-380-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEWAYGO | MI |
| 2024-01-10 | 231-475-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MANTON | MI |
| 2024-01-10 | 231-797-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LUTHER | MI |
| 2024-01-10 | 231-831-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EASTJORDAN | MI |
| 2023-10-16 | 231-846-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CADILLAC | MI |
| 2023-07-07 | 231-449-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BALDWIN | MI |
| 2023-05-25 | 231-643-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MORLEY | MI |
| 2023-05-25 | 231-912-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | REED CITY | 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.