NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 281
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-04 | 281-956-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | APOLLO | TX |
| 2025-01-29 | 281-473-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2025-01-29 | 281-473-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2025-01-29 | 281-473-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2025-01-29 | 281-473-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2024-09-18 | 281-271-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DEER PARK | TX |
| 2024-09-18 | 281-271-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DEER PARK | TX |
| 2024-09-18 | 281-547-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | TOMBALL | TX |
| 2024-09-18 | 281-843-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HIGHLANDS | TX |
| 2024-09-18 | 281-860-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHANNELVW | TX |
| 2024-04-01 | 281-500-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LANGHAMCRK | TX |
| 2024-04-01 | 281-640-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SATSUMA | TX |
| 2023-12-18 | 281-648-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRIENDSWD | TX |
| 2022-05-26 | 281-694-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SEABROOK | TX |
| 2022-05-10 | 281-643-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MANVEL | TX |
| 2022-05-10 | 281-643-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MANVEL | TX |
| 2022-04-22 | 281-400-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRIENDSWD | TX |
| 2022-04-22 | 281-400-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRIENDSWD | TX |
| 2022-04-13 | 281-941-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LA PORTE | TX |
| 2022-03-28 | 281-393-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LIVERPOOL | TX |
| 2022-03-28 | 281-628-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BAYTOWN | TX |
| 2022-03-28 | 281-789-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PINEHURST | TX |
| 2022-03-28 | 281-815-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LANGHAMCRK | TX |
| 2022-03-28 | 281-947-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRIENDSWD | TX |
| 2022-03-18 | 281-504-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2022-03-18 | 281-713-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HUMBLE | TX |
| 2022-01-18 | 281-559-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2021-11-21 | 281-699-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CROSBY | TX |
| 2021-11-21 | 281-868-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BAYTOWN | TX |
| 2021-11-21 | 281-934-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BROOKSHIRE | TX |
| 2021-10-12 | 281-317-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRIENDSWD | TX |
| 2021-10-12 | 281-317-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FRIENDSWD | TX |
| 2021-10-12 | 281-375-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BROOKSHIRE | TX |
| 2021-10-12 | 281-532-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2021-10-12 | 281-542-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DEER PARK | TX |
| 2021-09-27 | 281-497-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2021-09-27 | 281-498-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2021-09-27 | 281-556-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2021-09-27 | 281-759-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2021-09-27 | 281-922-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HSTNSUBURB | TX |
| 2021-06-09 | 281-699-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CROSBY | TX |
| 2021-04-22 | 281-522-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2021-04-22 | 281-522-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2021-04-22 | 281-559-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2021-04-22 | 281-559-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2020-06-24 | 281-522-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2020-06-24 | 281-522-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2020-06-24 | 281-522-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2020-06-24 | 281-522-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
| 2020-06-24 | 281-522-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEMAH | TX |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.