NumberResearchRecent thousands-block assignments
7 blocks assigned in January 2026 · 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, January 2026 — NPA 731
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-01-28 | 731-226-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
| 2026-01-27 | 731-294-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | HUMBOLDT | TN |
| 2026-01-27 | 731-331-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BOLIVAR | TN |
| 2026-01-27 | 731-710-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HALLS | TN |
| 2026-01-16 | 731-262-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | PARIS | TN |
| 2026-01-14 | 731-240-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2026-01-14 | 731-262-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | PARIS | TN |
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.