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 657
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-10-02 | 657-751-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2024-10-02 | 657-751-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2024-10-02 | 657-751-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2024-10-02 | 657-751-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2024-10-02 | 657-751-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2023-10-03 | 657-678-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ANAHEIM | CA |
| 2023-10-03 | 657-678-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ANAHEIM | CA |
| 2023-10-03 | 657-678-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ANAHEIM | CA |
| 2022-02-24 | 657-686-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GARDEN GRV | CA |
| 2022-02-09 | 657-565-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA ANA | CA |
| 2022-02-09 | 657-565-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA ANA | CA |
| 2022-02-09 | 657-565-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA ANA | CA |
| 2022-02-09 | 657-565-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA ANA | CA |
| 2022-01-16 | 657-540-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HUNTITNBCH | CA |
| 2022-01-16 | 657-540-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HUNTITNBCH | CA |
| 2022-01-16 | 657-540-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HUNTITNBCH | CA |
| 2021-12-17 | 657-534-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ORANGE | CA |
| 2021-12-17 | 657-534-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ORANGE | CA |
| 2021-12-17 | 657-534-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ORANGE | CA |
| 2021-12-17 | 657-534-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ORANGE | CA |
| 2021-12-17 | 657-534-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ORANGE | CA |
| 2021-10-25 | 657-535-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | YORBALINDA | CA |
| 2021-10-25 | 657-535-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | YORBALINDA | CA |
| 2021-10-19 | 657-520-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA ANA | CA |
| 2021-10-19 | 657-520-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA ANA | CA |
| 2021-10-19 | 657-520-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA ANA | CA |
| 2021-10-19 | 657-525-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2021-10-19 | 657-525-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2021-10-19 | 657-525-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2021-10-19 | 657-525-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2021-10-18 | 657-523-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GARDEN GRV | CA |
| 2021-10-18 | 657-523-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GARDEN GRV | CA |
| 2021-10-18 | 657-523-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GARDEN GRV | CA |
| 2021-10-18 | 657-523-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GARDEN GRV | CA |
| 2021-10-18 | 657-523-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GARDEN GRV | CA |
| 2021-10-15 | 657-526-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ANAHEIM | CA |
| 2021-10-15 | 657-526-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ANAHEIM | CA |
| 2021-10-15 | 657-526-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ANAHEIM | CA |
| 2021-10-15 | 657-526-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ANAHEIM | CA |
| 2021-10-15 | 657-526-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ANAHEIM | CA |
| 2021-10-14 | 657-544-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SILVERADO | CA |
| 2021-10-14 | 657-544-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SILVERADO | CA |
| 2021-06-25 | 657-566-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FULLERTON | CA |
| 2021-06-25 | 657-822-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ORANGE | CA |
| 2021-06-25 | 657-844-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SILVERADO | CA |
| 2021-06-25 | 657-866-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | YORBALINDA | CA |
| 2021-04-22 | 657-588-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BREA | CA |
| 2021-04-22 | 657-588-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BREA | CA |
| 2021-04-22 | 657-588-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BREA | CA |
| 2020-10-07 | 657-757-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA ANA | CA |
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.