NumberResearchRecent thousands-block assignments
10 blocks assigned in April 2026 · 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, April 2026 — NPA 731
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-04-29 | 731-233-7XXX | 7000–7999 | Assigned | AHOI LLC | 883K | GREENFIELD | TN |
| 2026-04-29 | 731-666-3XXX | 3000–3999 | Assigned | AHOI LLC | 883K | CAMDEN | TN |
| 2026-04-29 | 731-766-3XXX | 3000–3999 | Assigned | AHOI LLC | 883K | TRENTON | TN |
| 2026-04-27 | 731-240-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2026-04-27 | 731-281-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2026-04-21 | 731-931-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DYERSBURG | TN |
| 2026-04-08 | 731-262-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | PARIS | TN |
| 2026-04-07 | 731-461-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ALAMO | TN |
| 2026-04-07 | 731-636-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MARTIN | TN |
| 2026-04-07 | 731-742-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BRADFORD | TN |
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.