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 831
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
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Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-05-11 | 831-203-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SALINAS | CA |
| 2026-05-11 | 831-274-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WATSONVL | CA |
| 2026-05-11 | 831-612-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | APTOS | CA |
| 2026-02-17 | 831-665-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOLLISTER | CA |
| 2026-01-12 | 831-641-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTEREY | CA |
| 2025-01-15 | 831-287-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SALINAS | CA |
| 2025-01-15 | 831-435-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SANTA CRUZ | CA |
| 2025-01-15 | 831-774-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GONZALES | CA |
| 2024-12-03 | 831-850-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FELTON | CA |
| 2024-12-03 | 831-921-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TRES PINOS | CA |
| 2024-10-14 | 831-392-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTEREY | CA |
| 2024-09-11 | 831-532-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BEN LOMOND | CA |
| 2024-08-12 | 831-366-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BOULDERCRK | CA |
| 2024-04-29 | 831-689-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | APTOS | CA |
| 2024-04-10 | 831-583-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTEREY | CA |
| 2024-01-16 | 831-665-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOLLISTER | CA |
| 2024-01-16 | 831-821-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TRES PINOS | CA |
| 2023-05-25 | 831-665-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOLLISTER | CA |
| 2023-03-27 | 831-612-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | APTOS | CA |
| 2022-10-05 | 831-628-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TRES PINOS | CA |
| 2022-10-05 | 831-667-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BIG SUR | CA |
| 2022-10-05 | 831-883-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTEREY | CA |
| 2022-07-05 | 831-586-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SAN JUAN | CA |
| 2022-04-06 | 831-219-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | APTOS | CA |
| 2022-03-15 | 831-667-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BIG SUR | CA |
| 2022-03-15 | 831-675-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GONZALES | CA |
| 2021-09-07 | 831-628-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TRES PINOS | CA |
| 2021-09-07 | 831-774-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GONZALES | CA |
| 2020-12-15 | 831-382-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SAN LUCAS | CA |
| 2020-12-15 | 831-632-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CASTROVL | CA |
| 2020-12-15 | 831-659-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CARMEL VLY | CA |
| 2020-12-15 | 831-675-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GONZALES | CA |
| 2020-12-15 | 831-679-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHUALAR | CA |
| 2020-12-08 | 831-336-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BEN LOMOND | CA |
| 2019-04-08 | 831-887-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTEREY | CA |
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.