NumberResearchRecent thousands-block assignments
12 blocks assigned in March 2026 · 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, March 2026 — NPA 660
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-03-17 | 660-223-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WARSAW | MO |
| 2026-03-17 | 660-477-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | COAL | MO |
| 2026-03-17 | 660-655-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HOUSTONIA | MO |
| 2026-03-16 | 660-276-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | MOBERLY | MO |
| 2026-03-11 | 660-270-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | CLINTON | MO |
| 2026-03-05 | 660-463-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CONCORDIA | MO |
| 2026-03-05 | 660-464-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BUTLER | MO |
| 2026-03-05 | 660-668-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | COLE CAMP | MO |
| 2026-03-05 | 660-683-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CRAIG | MO |
| 2026-03-05 | 660-696-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DEEPWATER | MO |
| 2026-03-05 | 660-699-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CLARENCE | MO |
| 2026-03-05 | 660-846-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BLACKWATER | 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.