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 |
|---|---|---|---|---|---|---|---|
| 2023-05-09 | 731-331-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BOLIVAR | TN |
| 2023-05-09 | 731-510-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ADAMSVILLE | TN |
| 2023-05-09 | 731-618-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HUMBOLDT | TN |
| 2023-05-09 | 731-666-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CAMDEN | TN |
| 2023-05-09 | 731-699-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DRESDEN | TN |
| 2023-05-09 | 731-710-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HALLS | TN |
| 2023-05-09 | 731-730-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HENDERSON | TN |
| 2023-05-09 | 731-737-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DYERSBURG | TN |
| 2023-05-09 | 731-877-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GLEASON | TN |
| 2023-05-09 | 731-900-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BIG SANDY | TN |
| 2023-05-05 | 731-240-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | JACKSON | TN |
| 2023-04-28 | 731-271-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SO FULTON | TN |
| 2023-04-19 | 731-321-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SCOTTSHILL | TN |
| 2023-04-19 | 731-858-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SARDIS | TN |
| 2023-04-07 | 731-206-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | SCOTTSHILL | TN |
| 2023-04-04 | 731-208-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-04-04 | 731-216-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-04-04 | 731-216-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-04-04 | 731-216-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-04-04 | 731-216-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-04-04 | 731-216-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-04-04 | 731-216-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-04-04 | 731-216-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-04-04 | 731-216-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-03-28 | 731-991-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | UNION CITY | TN |
| 2023-03-14 | 731-291-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | BELLS | TN |
| 2023-02-22 | 731-453-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | SELMER | TN |
| 2023-02-13 | 731-891-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2023-02-08 | 731-281-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | MARTIN | TN |
| 2023-02-01 | 731-510-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | ADAMSVILLE | TN |
| 2023-01-27 | 731-291-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | BELLS | TN |
| 2023-01-17 | 731-995-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILAN | TN |
| 2023-01-13 | 731-312-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | CEDARGROVE | TN |
| 2023-01-10 | 731-732-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | GRAND JCT | TN |
| 2022-12-16 | 731-321-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | SCOTTSHILL | TN |
| 2022-12-14 | 731-793-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HUNTINGDON | TN |
| 2022-11-29 | 731-274-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | SIDONIA | TN |
| 2022-11-29 | 731-280-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | SHILOH | TN |
| 2022-11-23 | 731-251-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | DECATURVL | TN |
| 2022-11-23 | 731-275-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | PALMERSVL | TN |
| 2022-11-23 | 731-276-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | LATHAM | TN |
| 2022-11-23 | 731-309-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | MILLEDGEVL | TN |
| 2022-11-23 | 731-500-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | PARSONS | TN |
| 2022-11-22 | 731-766-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | TRENTON | TN |
| 2022-11-21 | 731-252-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | BRUCETON | TN |
| 2022-11-17 | 731-293-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JACKSON | TN |
| 2022-11-15 | 731-226-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2022-11-15 | 731-226-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2022-11-04 | 731-503-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | NEWBERN | TN |
| 2022-11-03 | 731-248-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | GIBSON | 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.