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 660
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-10-28 | 660-317-4XXX | 4000–4999 | Assigned | NETGENUITY INC. | 356H | SEDALIA | MO |
| 2022-10-28 | 660-317-5XXX | 5000–5999 | Assigned | NETGENUITY INC. | 356H | SEDALIA | MO |
| 2022-10-28 | 660-317-6XXX | 6000–6999 | Assigned | NETGENUITY INC. | 356H | SEDALIA | MO |
| 2022-10-28 | 660-317-7XXX | 7000–7999 | Assigned | NETGENUITY INC. | 356H | SEDALIA | MO |
| 2022-10-28 | 660-680-6XXX | 6000–6999 | Assigned | NETGENUITY INC. | 356H | SEDALIA | MO |
| 2022-10-25 | 660-205-8XXX | 8000–8999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-205-9XXX | 9000–9999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-335-8XXX | 8000–8999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-515-1XXX | 1000–1999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-515-8XXX | 8000–8999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-515-9XXX | 9000–9999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-557-0XXX | 0000–0999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-557-5XXX | 5000–5999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-557-6XXX | 6000–6999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-557-7XXX | 7000–7999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-557-8XXX | 8000–8999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2022-10-25 | 660-557-9XXX | 9000–9999 | Assigned | NETGENUITY INC. | 356H | SWEET SPG | MO |
| 2020-06-17 | 660-310-8XXX | 8000–8999 | Assigned | NETGENUITY INC. | 356H | SEDALIA | MO |
| 2020-03-05 | 660-600-9XXX | 9000–9999 | Assigned | NETGENUITY INC. | 356H | SEDALIA | MO |
| 2020-02-05 | 660-600-2XXX | 2000–2999 | Assigned | NETGENUITY INC. | 356H | SEDALIA | MO |
| 2015-01-26 | 660-570-2XXX | 2000–2999 | Assigned | NETGENUITY INC. | 356H | SEDALIA | 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.