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 |
|---|---|---|---|---|---|---|---|
| 2021-12-02 | 731-910-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2021-12-02 | 731-910-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2021-12-02 | 731-910-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2021-12-02 | 731-910-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2021-12-02 | 731-910-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2021-12-02 | 731-910-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2021-12-02 | 731-910-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2021-11-23 | 731-246-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | UNION CITY | TN |
| 2021-11-23 | 731-246-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | UNION CITY | TN |
| 2021-10-28 | 731-289-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | MEDINA | TN |
| 2021-10-26 | 731-290-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BETHEL SPG | TN |
| 2021-10-21 | 731-291-9XXX | 9000–9999 | Assigned | AT&T - LOCAL | 7421 | BELLS | TN |
| 2021-10-19 | 731-770-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | WHITEVILLE | TN |
| 2021-10-12 | 731-699-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | DRESDEN | TN |
| 2021-10-01 | 731-206-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | SCOTTSHILL | TN |
| 2021-10-01 | 731-213-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | CAMDEN | TN |
| 2021-10-01 | 731-240-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2021-10-01 | 731-244-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | SELMER | TN |
| 2021-10-01 | 731-248-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | GIBSON | TN |
| 2021-10-01 | 731-251-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | DECATURVL | TN |
| 2021-10-01 | 731-257-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | PARSONS | TN |
| 2021-10-01 | 731-273-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | HUMBOLDT | TN |
| 2021-10-01 | 731-309-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | MILLEDGEVL | TN |
| 2021-10-01 | 731-319-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | TIPTONVL | TN |
| 2021-10-01 | 731-330-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | TRENTON | TN |
| 2021-10-01 | 731-510-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | ADAMSVILLE | TN |
| 2021-10-01 | 731-624-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | TROY | TN |
| 2021-10-01 | 731-628-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | NEWBERN | TN |
| 2021-10-01 | 731-710-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | HALLS | TN |
| 2021-10-01 | 731-837-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | MIDDLETON | TN |
| 2021-10-01 | 731-910-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | PARIS | TN |
| 2021-09-22 | 731-961-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | BELLS | TN |
| 2021-09-08 | 731-788-8XXX | 8000–8999 | Assigned | SKYE TELECOM LLC DBA SKYETEL | 622J | MICHIE | TN |
| 2021-09-03 | 731-277-6XXX | 6000–6999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | BROWNSVL | TN |
| 2021-09-03 | 731-326-4XXX | 4000–4999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | BROWNSVL | TN |
| 2021-08-31 | 731-595-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HENDERSON | TN |
| 2021-08-31 | 731-736-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JACKSON | TN |
| 2021-08-30 | 731-212-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BOLIVAR | TN |
| 2021-08-30 | 731-453-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SELMER | TN |
| 2021-08-27 | 731-510-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ADAMSVILLE | TN |
| 2021-08-26 | 731-474-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GIBSON | TN |
| 2021-08-26 | 731-868-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | JACKSON | TN |
| 2021-08-16 | 731-341-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | DRESDEN | TN |
| 2021-08-02 | 731-633-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | JACKSON | TN |
| 2021-08-02 | 731-633-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | JACKSON | TN |
| 2021-08-02 | 731-633-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | JACKSON | TN |
| 2021-08-02 | 731-633-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | JACKSON | TN |
| 2021-07-22 | 731-677-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | FRIENDSHIP | TN |
| 2021-07-13 | 731-574-9XXX | 9000–9999 | Assigned | JACKSON ENERGY AUTHORITY - TN | 150G | JACKSON | TN |
| 2021-06-11 | 731-529-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | MICHIE | 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.