NumberResearchRecent thousands-block assignments
5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2022-11-03 | 731-248-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | GIBSON | TN |
| 2022-11-03 | 731-289-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | MEDINA | TN |
| 2022-11-02 | 731-275-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | PALMERSVL | TN |
| 2022-10-28 | 731-208-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-208-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-208-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-208-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-208-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-208-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-208-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-208-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-208-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-332-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2022-10-28 | 731-332-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2022-10-28 | 731-867-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-867-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-867-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-867-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-867-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-867-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-25 | 731-867-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | PARIS | TN |
| 2022-10-25 | 731-867-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | PARIS | TN |
| 2022-10-25 | 731-867-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | PARIS | TN |
| 2022-10-25 | 731-867-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | PARIS | TN |
| 2022-10-17 | 731-532-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BETHEL SPG | TN |
| 2022-10-07 | 731-800-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | LEXINGTON | TN |
| 2022-09-27 | 731-731-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-27 | 731-731-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-27 | 731-731-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-27 | 731-731-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-27 | 731-731-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-27 | 731-731-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-27 | 731-731-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-27 | 731-731-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-27 | 731-731-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-27 | 731-731-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2022-09-20 | 731-630-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | BROWNSVL | TN |
| 2022-09-09 | 731-276-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LATHAM | TN |
| 2022-09-08 | 731-289-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | MEDINA | TN |
| 2022-09-08 | 731-289-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | MEDINA | TN |
| 2022-08-26 | 731-274-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SIDONIA | TN |
| 2022-08-24 | 731-737-2XXX | 2000–2999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | DYERSBURG | TN |
| 2022-08-03 | 731-289-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | MEDINA | TN |
| 2022-07-13 | 731-737-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | DYERSBURG | TN |
| 2022-07-05 | 731-213-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CAMDEN | TN |
| 2022-07-05 | 731-995-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILAN | TN |
| 2022-06-29 | 731-900-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BIG SANDY | TN |
| 2022-06-14 | 731-233-4XXX | 4000–4999 | Assigned | WEST KENTUCKY & TENNESSEE TELECOMMUNICATIONS CO-OP | 337J | GREENFIELD | TN |
| 2022-06-14 | 731-600-2XXX | 2000–2999 | Assigned | WEST KENTUCKY & TENNESSEE TELECOMMUNICATIONS CO-OP | 337J | MCKENZIE | TN |
| 2022-06-13 | 731-991-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | UNION CITY | TN |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.