NumberResearchThousands-blocks in 931-400
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 931-400 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 931 blocks
Most active assignees, all time — NPA 931
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-11-30 | 931-400-0XXX | 0000–0999 | Assigned | TWIN LAKES COMMUNICATIONS, INC. - TN | 204G | COOKEVILLE | TN |
| 2011-03-28 | 931-400-1XXX | 1000–1999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | COOKEVILLE | TN |
| 2011-07-27 | 931-400-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | COOKEVILLE | TN |
| 2011-10-04 | 931-400-3XXX | 3000–3999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | COOKEVILLE | TN |
| 2012-04-18 | 931-400-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | COOKEVILLE | TN |
| 2014-09-30 | 931-400-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | COOKEVILLE | TN |
| 2023-07-13 | 931-400-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | COOKEVILLE | TN |
| 2016-09-16 | 931-400-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | COOKEVILLE | TN |
| 2015-10-01 | 931-400-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | COOKEVILLE | TN |
| 2020-12-24 | 931-400-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | COOKEVILLE | 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.