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 |
|---|---|---|---|---|---|---|---|
| 2023-10-02 | 731-255-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2023-10-02 | 731-255-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2023-10-02 | 731-255-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2023-10-02 | 731-255-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2023-10-02 | 731-255-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | MARTIN | TN |
| 2023-10-02 | 731-257-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | PARSONS | TN |
| 2023-10-02 | 731-257-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | PARSONS | TN |
| 2023-10-02 | 731-443-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | TN |
| 2023-10-02 | 731-443-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | TN |
| 2023-10-02 | 731-458-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | SAVANNAH | TN |
| 2023-10-02 | 731-458-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | SAVANNAH | TN |
| 2023-10-02 | 731-630-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | TN |
| 2023-10-02 | 731-630-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | TN |
| 2023-10-02 | 731-734-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | BROWNSVL | TN |
| 2023-09-18 | 731-250-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-18 | 731-250-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-18 | 731-250-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-18 | 731-250-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-18 | 731-250-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-18 | 731-250-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-18 | 731-250-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-18 | 731-250-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-18 | 731-250-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-18 | 731-250-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-15 | 731-230-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-09-05 | 731-737-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DYERSBURG | TN |
| 2023-09-05 | 731-777-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DYERSBURG | TN |
| 2023-08-31 | 731-438-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | SAVANNAH | TN |
| 2023-08-30 | 731-230-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | PARIS | TN |
| 2023-08-29 | 731-245-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TN | 525E | LATHAM | TN |
| 2023-08-29 | 731-280-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | SHILOH | TN |
| 2023-08-29 | 731-309-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | MILLEDGEVL | TN |
| 2023-08-29 | 731-831-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | SIDONIA | TN |
| 2023-08-29 | 731-944-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | SO FULTON | TN |
| 2023-08-23 | 731-210-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | COTTAGEGRV | TN |
| 2023-08-23 | 731-510-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | ADAMSVILLE | TN |
| 2023-08-16 | 731-736-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2023-08-16 | 731-736-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2023-07-31 | 731-837-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MIDDLETON | TN |
| 2023-07-31 | 731-961-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BELLS | TN |
| 2023-07-19 | 731-280-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SHILOH | TN |
| 2023-07-13 | 731-737-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2023-07-13 | 731-737-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2023-07-13 | 731-737-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2023-07-13 | 731-931-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | DYERSBURG | TN |
| 2023-07-13 | 731-980-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | LEXINGTON | TN |
| 2023-07-13 | 731-980-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | LEXINGTON | TN |
| 2023-07-13 | 731-980-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | LEXINGTON | TN |
| 2023-07-13 | 731-980-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | LEXINGTON | TN |
| 2023-07-13 | 731-980-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | LEXINGTON | 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.