NumberResearchThousands-blocks in 731-519
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 731-519 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 731 blocks
Most active assignees, all time — NPA 731
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-11-07 | 731-519-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | BROWNSVL | TN |
| — | 731-519-1XXX | 1000–1999 | Reserved | PAETEC ITEL, LLC | 829J | BROWNSVL | TN |
| — | 731-519-2XXX | 2000–2999 | Reserved | PAETEC ITEL, LLC | 829J | BROWNSVL | TN |
| — | 731-519-3XXX | 3000–3999 | Reserved | PAETEC ITEL, LLC | 829J | BROWNSVL | TN |
| 2016-03-14 | 731-519-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | TN |
| 2016-03-14 | 731-519-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | TN |
| 2017-03-17 | 731-519-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | BROWNSVL | TN |
| 2014-04-04 | 731-519-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BROWNSVL | TN |
| 2016-01-14 | 731-519-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | BROWNSVL | TN |
| 2026-07-30 | 731-519-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | 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.