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 573
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-19 | 573-459-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LYON | MO |
| 2026-08-19 | 573-548-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTAUK | MO |
| 2026-08-19 | 573-627-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JAPAN | MO |
| 2026-07-07 | 573-963-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEW MADRID | MO |
| 2026-06-10 | 573-321-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ADVANCE | MO |
| 2026-02-20 | 573-241-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CUBA | MO |
| 2026-02-20 | 573-251-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FREMONT | MO |
| 2026-02-20 | 573-551-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | KENNETT | MO |
| 2026-02-20 | 573-764-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GERALD | MO |
| 2026-02-20 | 573-983-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HUNNEWELL | MO |
| 2026-02-20 | 573-985-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEW LONDON | MO |
| 2026-01-13 | 573-679-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BOURBON | MO |
| 2026-01-13 | 573-689-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BUNKER | MO |
| 2026-01-13 | 573-697-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BELLEVIEW | MO |
| 2026-01-13 | 573-834-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BERGER | MO |
| 2026-01-12 | 573-414-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DEXTER | MO |
| 2025-12-11 | 573-322-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ELLSINORE | MO |
| 2025-12-11 | 573-598-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ANNAPOLIS | MO |
| 2025-12-11 | 573-626-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BOSS | MO |
| 2025-12-11 | 573-655-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LA GRANGE | MO |
| 2025-12-11 | 573-767-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTICELLO | MO |
| 2025-12-11 | 573-858-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TIMBER | MO |
| 2025-09-15 | 573-345-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CLIMAX SPG | MO |
| 2025-09-15 | 573-420-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DIXON | MO |
| 2025-09-12 | 573-603-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HANNIBAL | MO |
| 2025-09-12 | 573-722-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ADVANCE | MO |
| 2025-09-12 | 573-748-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEW MADRID | MO |
| 2025-09-12 | 573-866-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PATTON | MO |
| 2025-06-20 | 573-269-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | OATES | MO |
| 2025-06-20 | 573-299-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | VICHY | MO |
| 2025-06-20 | 573-323-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | VAN BUREN | MO |
| 2025-06-20 | 573-393-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WESTQUINCY | MO |
| 2025-06-20 | 573-457-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SPRING BLF | MO |
| 2025-06-20 | 573-458-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ROLLA | MO |
| 2025-06-20 | 573-460-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | RICHLAND | MO |
| 2025-06-20 | 573-588-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SHELBINA | MO |
| 2025-06-20 | 573-699-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SAFE | MO |
| 2025-06-20 | 573-927-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | STANTON | MO |
| 2025-06-18 | 573-237-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEW HAVEN | MO |
| 2025-06-18 | 573-325-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WINONA | MO |
| 2025-06-10 | 573-251-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FREMONT | MO |
| 2025-06-10 | 573-435-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | EDGAR SPG | MO |
| 2025-06-10 | 573-459-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LYON | MO |
| 2025-06-10 | 573-546-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | IRONTON | MO |
| 2025-06-10 | 573-548-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTAUK | MO |
| 2025-06-10 | 573-627-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JAPAN | MO |
| 2025-06-10 | 573-648-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CENTERVL | MO |
| 2025-06-10 | 573-674-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LICKING | MO |
| 2025-06-10 | 573-697-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BELLEVIEW | MO |
| 2025-06-10 | 573-710-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MARTINSBG | MO |
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.