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 |
|---|---|---|---|---|---|---|---|
| 2019-02-27 | 731-280-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | SHILOH | TN |
| 2019-02-21 | 731-309-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | MILLEDGEVL | TN |
| 2019-02-21 | 731-315-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | ADAMSVILLE | TN |
| 2019-02-20 | 731-636-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | MARTIN | TN |
| 2019-01-18 | 731-202-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | BELLS | TN |
| 2019-01-18 | 731-202-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | BELLS | TN |
| 2019-01-18 | 731-236-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | GRAND JCT | TN |
| 2019-01-18 | 731-236-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | GRAND JCT | TN |
| 2019-01-18 | 731-237-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | GREENFIELD | TN |
| 2019-01-18 | 731-237-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | GREENFIELD | TN |
| 2019-01-18 | 731-276-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | LATHAM | TN |
| 2019-01-18 | 731-276-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | LATHAM | TN |
| 2019-01-18 | 731-341-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | DRESDEN | TN |
| 2019-01-18 | 731-341-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | DRESDEN | TN |
| 2019-01-18 | 731-361-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | BOLIVAR | TN |
| 2019-01-18 | 731-361-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | BOLIVAR | TN |
| 2019-01-18 | 731-483-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | DYER | TN |
| 2019-01-18 | 731-603-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | BETHEL SPG | TN |
| 2019-01-18 | 731-603-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | BETHEL SPG | TN |
| 2019-01-18 | 731-666-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | CAMDEN | TN |
| 2019-01-18 | 731-666-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | CAMDEN | TN |
| 2019-01-18 | 731-734-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | TN |
| 2019-01-18 | 731-734-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | TN |
| 2019-01-18 | 731-777-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2019-01-18 | 731-777-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2019-01-18 | 731-879-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | HENDERSON | TN |
| 2019-01-18 | 731-888-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | BIG SANDY | TN |
| 2019-01-18 | 731-888-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | BIG SANDY | TN |
| 2019-01-09 | 731-202-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | BELLS | TN |
| 2019-01-09 | 731-273-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUMBOLDT | TN |
| 2019-01-09 | 731-432-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | BROWNSVL | TN |
| 2019-01-08 | 731-332-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MARTIN | TN |
| 2018-12-20 | 731-318-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MILAN | TN |
| 2018-12-13 | 731-207-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | MCKENZIE | TN |
| 2018-12-13 | 731-207-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | MCKENZIE | TN |
| 2018-12-13 | 731-224-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | HALLS | TN |
| 2018-12-13 | 731-224-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | HALLS | TN |
| 2018-12-13 | 731-248-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | GIBSON | TN |
| 2018-12-13 | 731-248-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | GIBSON | TN |
| 2018-12-13 | 731-260-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | HENNING | TN |
| 2018-12-13 | 731-260-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | HENNING | TN |
| 2018-12-13 | 731-281-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2018-12-13 | 731-636-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2018-12-12 | 731-458-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | SAVANNAH | TN |
| 2018-12-04 | 731-437-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
| 2018-11-27 | 731-202-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | BELLS | TN |
| 2018-11-27 | 731-603-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | BETHEL SPG | TN |
| 2018-11-15 | 731-312-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | CEDARGROVE | TN |
| 2018-11-15 | 731-312-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | CEDARGROVE | TN |
| 2018-11-06 | 731-257-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | PARSONS | 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.