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 |
|---|---|---|---|---|---|---|---|
| 2015-09-21 | 731-483-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | DYER | TN |
| 2015-09-16 | 731-478-0XXX | 0000–0999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | DYERSBURG | TN |
| 2015-09-15 | 731-324-7XXX | 7000–7999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | RIPLEY | TN |
| 2015-09-08 | 731-201-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BIG SANDY | TN |
| 2015-09-08 | 731-203-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BOLIVAR | TN |
| 2015-09-08 | 731-238-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | MILAN | TN |
| 2015-09-08 | 731-451-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | HENNING | TN |
| 2015-07-28 | 731-434-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | SELMER | TN |
| 2015-06-10 | 731-623-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | TIPTONVL | TN |
| 2015-05-22 | 731-214-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CEDARGROVE | TN |
| 2015-05-22 | 731-236-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | GRAND JCT | TN |
| 2015-05-22 | 731-599-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | UNION CITY | TN |
| 2015-05-15 | 731-574-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2015-05-15 | 731-574-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2015-05-15 | 731-574-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2015-05-12 | 731-227-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2015-04-16 | 731-574-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2015-04-14 | 731-418-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HUNTINGDON | TN |
| 2015-04-13 | 731-259-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DYERSBURG | TN |
| 2015-04-13 | 731-868-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2015-03-09 | 731-400-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | SAVANNAH | TN |
| 2015-03-02 | 731-203-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BOLIVAR | TN |
| 2015-02-27 | 731-224-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | HALLS | TN |
| 2015-01-23 | 731-207-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | MCKENZIE | TN |
| 2015-01-23 | 731-227-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | PARIS | TN |
| 2015-01-23 | 731-259-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | DYERSBURG | TN |
| 2015-01-23 | 731-324-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | RIPLEY | TN |
| 2015-01-23 | 731-327-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | MICHIE | TN |
| 2015-01-23 | 731-400-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | SAVANNAH | TN |
| 2015-01-23 | 731-410-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | JACKSON | TN |
| 2015-01-23 | 731-418-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | HUNTINGDON | TN |
| 2015-01-23 | 731-420-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | HUMBOLDT | TN |
| 2015-01-23 | 731-435-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | HENDERSON | TN |
| 2015-01-23 | 731-468-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CAMDEN | TN |
| 2015-01-23 | 731-470-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | TRENTON | TN |
| 2015-01-23 | 731-483-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | DYER | TN |
| 2015-01-23 | 731-907-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | HORNBEAK | TN |
| 2015-01-23 | 731-937-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | KENTON | TN |
| 2015-01-21 | 731-326-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BROWNSVL | TN |
| 2015-01-21 | 731-681-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | GLEASON | TN |
| 2015-01-21 | 731-798-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | LEXINGTON | TN |
| 2015-01-02 | 731-420-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUMBOLDT | TN |
| 2014-12-17 | 731-389-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | UNION CITY | TN |
| 2014-12-15 | 731-203-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BOLIVAR | TN |
| 2014-12-10 | 731-501-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BELLS | TN |
| 2014-12-09 | 731-201-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BIG SANDY | TN |
| 2014-12-09 | 731-214-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CEDARGROVE | TN |
| 2014-12-09 | 731-236-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | GRAND JCT | TN |
| 2014-12-09 | 731-434-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | SELMER | TN |
| 2014-12-09 | 731-681-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | GLEASON | 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.