NumberResearchRecent thousands-block assignments
5 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, last 30 days — NPA 731
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-03-15 | 731-462-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | MEDINA | TN |
| 2016-03-15 | 731-462-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | MEDINA | TN |
| 2016-03-15 | 731-678-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | GREENFIELD | TN |
| 2016-03-15 | 731-678-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | GREENFIELD | TN |
| 2016-03-15 | 731-681-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | GLEASON | TN |
| 2016-03-15 | 731-681-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | GLEASON | TN |
| 2016-03-15 | 731-859-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | WHITEVILLE | TN |
| 2016-03-15 | 731-859-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | WHITEVILLE | TN |
| 2016-03-15 | 731-879-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | HENDERSON | TN |
| 2016-03-15 | 731-879-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | HENDERSON | TN |
| 2016-03-14 | 731-260-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | HENNING | TN |
| 2016-03-14 | 731-260-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | HENNING | TN |
| 2016-03-14 | 731-504-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | UNION CITY | TN |
| 2016-03-14 | 731-504-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | UNION CITY | 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 |
| 2016-03-14 | 731-535-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | HUNTINGDON | TN |
| 2016-03-14 | 731-535-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | HUNTINGDON | TN |
| 2016-03-11 | 731-309-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MILLEDGEVL | TN |
| 2016-03-11 | 731-315-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ADAMSVILLE | TN |
| 2016-03-09 | 731-327-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | MICHIE | TN |
| 2016-03-09 | 731-327-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | MICHIE | TN |
| 2016-03-09 | 731-483-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | DYER | TN |
| 2016-03-09 | 731-577-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | BETHEL SPG | TN |
| 2016-03-09 | 731-577-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | BETHEL SPG | TN |
| 2016-03-09 | 731-879-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HENDERSON | TN |
| 2016-03-08 | 731-248-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | GIBSON | TN |
| 2016-03-08 | 731-248-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | GIBSON | TN |
| 2016-03-02 | 731-224-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | HALLS | TN |
| 2016-03-02 | 731-224-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | HALLS | TN |
| 2016-03-02 | 731-907-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | HORNBEAK | TN |
| 2016-03-01 | 731-747-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | HUMBOLDT | TN |
| 2016-03-01 | 731-747-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | HUMBOLDT | TN |
| 2016-02-29 | 731-207-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | MCKENZIE | TN |
| 2016-02-29 | 731-207-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | MCKENZIE | TN |
| 2016-02-29 | 731-472-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | MIDDLETON | TN |
| 2016-02-29 | 731-472-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | MIDDLETON | TN |
| 2016-02-26 | 731-318-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | MILAN | TN |
| 2016-02-26 | 731-318-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | MILAN | TN |
| 2016-02-26 | 731-732-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | GRAND JCT | TN |
| 2016-02-26 | 731-732-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | GRAND JCT | TN |
| 2016-02-25 | 731-617-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | BELLS | TN |
| 2016-02-25 | 731-617-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | BELLS | TN |
| 2016-02-24 | 731-419-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | RIPLEY | TN |
| 2016-02-24 | 731-419-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | RIPLEY | TN |
| 2016-02-24 | 731-982-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | SELMER | TN |
| 2016-02-24 | 731-982-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | SELMER | TN |
| 2016-02-23 | 731-220-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | CAMDEN | TN |
| 2016-02-23 | 731-259-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2016-02-23 | 731-325-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | 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.