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 |
|---|---|---|---|---|---|---|---|
| 2020-06-11 | 731-900-7XXX | 7000–7999 | Assigned | FRACTEL, LLC | 965H | BIG SANDY | TN |
| 2020-06-11 | 731-900-9XXX | 9000–9999 | Assigned | FRACTEL, LLC | 965H | BIG SANDY | TN |
| 2020-06-03 | 731-240-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | JACKSON | TN |
| 2020-05-28 | 731-703-2XXX | 2000–2999 | Assigned | WEST KENTUCKY & TENNESSEE TELECOMMUNICATIONS CO-OP | 337J | SHARON | TN |
| 2020-05-21 | 731-206-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | SCOTTSHILL | TN |
| 2020-05-21 | 731-206-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | SCOTTSHILL | TN |
| 2020-05-20 | 731-251-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | DECATURVL | TN |
| 2020-05-20 | 731-251-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | DECATURVL | TN |
| 2020-05-20 | 731-903-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | HALLS | TN |
| 2020-05-20 | 731-903-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | HALLS | TN |
| 2020-05-13 | 731-595-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | HENDERSON | TN |
| 2020-05-01 | 731-507-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | UNION CITY | TN |
| 2020-05-01 | 731-891-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | JACKSON | TN |
| 2020-04-20 | 731-461-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | ALAMO | TN |
| 2020-04-13 | 731-434-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SELMER | TN |
| 2020-04-13 | 731-623-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TIPTONVL | TN |
| 2020-04-13 | 731-903-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HALLS | TN |
| 2020-04-13 | 731-937-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | KENTON | TN |
| 2020-04-07 | 731-202-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | BELLS | TN |
| 2020-04-01 | 731-205-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | RUTHERFORD | TN |
| 2020-03-31 | 731-289-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | MEDINA | TN |
| 2020-03-10 | 731-202-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BELLS | TN |
| 2020-02-24 | 731-202-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | BELLS | TN |
| 2020-02-19 | 731-284-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | HORNBEAK | TN |
| 2020-02-05 | 731-284-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | HORNBEAK | TN |
| 2020-01-30 | 731-224-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | HALLS | TN |
| 2020-01-22 | 731-535-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HUNTINGDON | TN |
| 2020-01-17 | 731-332-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MARTIN | TN |
| 2020-01-06 | 731-273-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUMBOLDT | TN |
| 2020-01-06 | 731-318-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MILAN | TN |
| 2019-12-04 | 731-858-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | SARDIS | TN |
| 2019-11-29 | 731-433-3XXX | 3000–3999 | Assigned | FRACTEL, LLC | 965H | GRAND JCT | TN |
| 2019-11-29 | 731-444-5XXX | 5000–5999 | Assigned | FRACTEL, LLC | 965H | JACKSON | TN |
| 2019-11-29 | 731-444-7XXX | 7000–7999 | Assigned | FRACTEL, LLC | 965H | JACKSON | TN |
| 2019-11-29 | 731-444-8XXX | 8000–8999 | Assigned | FRACTEL, LLC | 965H | JACKSON | TN |
| 2019-11-22 | 731-330-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | TRENTON | TN |
| 2019-11-19 | 731-206-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | SCOTTSHILL | TN |
| 2019-11-19 | 731-251-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | DECATURVL | TN |
| 2019-11-19 | 731-252-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | BRUCETON | TN |
| 2019-11-19 | 731-257-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | PARSONS | TN |
| 2019-11-11 | 731-283-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | DYER | TN |
| 2019-11-08 | 731-600-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | MCKENZIE | TN |
| 2019-10-24 | 731-315-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ADAMSVILLE | TN |
| 2019-10-23 | 731-628-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | NEWBERN | TN |
| 2019-10-02 | 731-600-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | MCKENZIE | TN |
| 2019-10-02 | 731-600-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | MCKENZIE | TN |
| 2019-09-27 | 731-240-4XXX | 4000–4999 | Assigned | VONAGE AMERICA LLC | 197D | JACKSON | TN |
| 2019-09-27 | 731-241-1XXX | 1000–1999 | Assigned | WEST KENTUCKY & TENNESSEE TELECOMMUNICATIONS CO-OP | 337J | PARIS | TN |
| 2019-09-27 | 731-888-2XXX | 2000–2999 | Assigned | WEST KENTUCKY & TENNESSEE TELECOMMUNICATIONS CO-OP | 337J | BIG SANDY | TN |
| 2019-09-11 | 731-200-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | TRENTON | 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.