NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 463
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 |
|---|---|---|---|---|---|---|---|
| 2025-08-14 | 463-401-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2025-08-14 | 463-401-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2025-08-14 | 463-401-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2025-08-14 | 463-401-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2025-08-14 | 463-401-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2025-08-14 | 463-401-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2025-08-14 | 463-401-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2024-10-22 | 463-315-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2024-10-22 | 463-315-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2024-10-22 | 463-315-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2024-10-22 | 463-315-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2024-10-22 | 463-315-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2024-08-07 | 463-309-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | ACTON | IN |
| 2024-05-07 | 463-303-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2024-05-07 | 463-303-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2024-05-07 | 463-303-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2024-03-29 | 463-296-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WESTNEWTON | IN |
| 2024-03-29 | 463-403-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | FISHERS | IN |
| 2023-09-05 | 463-261-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2023-09-05 | 463-261-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
| 2023-02-16 | 463-254-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CICERO | IN |
| 2022-08-04 | 463-247-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | MARIETTA | IN |
| 2022-08-04 | 463-732-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHARLOTSVL | IN |
| 2021-12-16 | 463-261-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | INDIANAPLS | IN |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.