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 279
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-10-14 | 279-266-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SCRM MAIN | CA |
| 2025-07-22 | 279-280-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SCRM NORTH | CA |
| 2025-07-22 | 279-280-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SCRM NORTH | CA |
| 2024-09-04 | 279-266-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SCRM MAIN | CA |
| 2024-09-04 | 279-266-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SCRM MAIN | CA |
| 2024-08-27 | 279-758-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SCRM NORTH | CA |
| 2024-06-03 | 279-263-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | RSVL CTHT | CA |
| 2023-05-04 | 279-226-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | RSVL MAIN | CA |
| 2023-05-04 | 279-232-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | MICHIGNBAR | CA |
| 2023-05-04 | 279-322-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WALNUT GRV | CA |
| 2023-05-03 | 279-221-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SCRM MAIN | 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.