NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/23/2026
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 661
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 |
|---|---|---|---|---|---|---|---|
| 2025-09-16 | 661-658-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2025-09-16 | 661-658-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2025-09-16 | 661-658-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2025-09-16 | 661-658-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2025-09-16 | 661-658-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2025-04-22 | 661-517-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA SGCC | CA |
| 2025-04-22 | 661-517-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA SGCC | CA |
| 2025-04-22 | 661-517-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA SGCC | CA |
| 2025-04-22 | 661-652-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA NHCS | CA |
| 2025-04-22 | 661-652-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA NHCS | CA |
| 2025-04-22 | 661-652-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNCA NHCS | CA |
| 2025-04-22 | 661-676-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LANCASTER | CA |
| 2025-04-22 | 661-676-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LANCASTER | CA |
| 2025-04-22 | 661-676-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LANCASTER | CA |
| 2025-04-14 | 661-671-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD SOUTH | CA |
| 2025-04-14 | 661-671-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD SOUTH | CA |
| 2025-04-14 | 661-671-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD SOUTH | CA |
| 2025-04-14 | 661-680-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2025-04-14 | 661-680-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2025-04-14 | 661-680-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD NORTH | CA |
| 2025-01-28 | 661-653-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DELANO | CA |
| 2025-01-02 | 661-262-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LAKEHUGHES | CA |
| 2025-01-02 | 661-646-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LANCASTER | CA |
| 2024-10-02 | 661-541-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-10-02 | 661-820-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-10-02 | 661-820-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-10-02 | 661-820-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-10-02 | 661-996-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2024-01-04 | 661-990-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PLDL PLDL | CA |
| 2024-01-04 | 661-990-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PLDL PLDL | CA |
| 2024-01-04 | 661-990-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PLDL PLDL | CA |
| 2024-01-04 | 661-990-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PLDL PLDL | CA |
| 2023-12-06 | 661-385-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | EDWARDS | CA |
| 2023-12-06 | 661-420-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CUYAMA | CA |
| 2023-12-06 | 661-457-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOST HILLS | CA |
| 2023-12-06 | 661-551-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BERENDMESA | CA |
| 2023-12-06 | 661-591-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GLENNVILLE | CA |
| 2023-12-06 | 661-597-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MOJAVE | CA |
| 2023-12-06 | 661-689-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLFRNHTSPG | CA |
| 2023-12-06 | 661-761-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MCKITTRICK | CA |
| 2023-12-06 | 661-764-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BUTTONWLLW | CA |
| 2023-12-06 | 661-773-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WALKERBSIN | CA |
| 2023-12-05 | 661-550-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BIG BUTTE | CA |
| 2023-10-05 | 661-595-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2023-10-05 | 661-595-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2023-10-05 | 661-595-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2023-10-05 | 661-595-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2023-10-05 | 661-636-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BKFD MAIN | CA |
| 2023-04-12 | 661-608-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HI VISTA | CA |
| 2023-04-12 | 661-608-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HI VISTA | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.