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 931
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-03-23 | 931-297-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | FAYETTEVL | TN |
| 2022-03-23 | 931-903-0XXX | 0000–0999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LAWRENCEBG | TN |
| 2022-03-15 | 931-329-9XXX | 9000–9999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HOHENWALD | TN |
| 2022-03-15 | 931-643-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LEWISBURG | TN |
| 2022-03-07 | 931-499-9XXX | 9000–9999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SPRINGHILL | TN |
| 2022-03-07 | 931-655-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PETERSBURG | TN |
| 2022-03-01 | 931-299-9XXX | 9000–9999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WAVERLY | TN |
| 2022-03-01 | 931-727-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SEWANEE | TN |
| 2022-03-01 | 931-767-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WINCHESTER | TN |
| 2022-03-01 | 931-777-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | COLUMBIA | TN |
| 2022-03-01 | 931-949-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SHELBYVL | TN |
| 2022-02-25 | 931-466-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MCEWEN | TN |
| 2022-02-23 | 931-222-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | TULLAHOMA | TN |
| 2022-02-23 | 931-226-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PULASKI | TN |
| 2022-02-23 | 931-342-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CLARKSVL | TN |
| 2022-02-23 | 931-546-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SOOAKGROVE | TN |
| 2022-02-23 | 931-633-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LYLES | TN |
| 2022-02-22 | 931-426-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | DOVER | TN |
| 2022-02-22 | 931-688-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CENTERVL | 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.