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 |
|---|---|---|---|---|---|---|---|
| 2010-03-11 | 731-215-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | JACKSON | TN |
| 2010-03-11 | 731-215-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | JACKSON | TN |
| 2010-03-11 | 731-215-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | JACKSON | TN |
| 2010-03-11 | 731-277-2XXX | 2000–2999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | BROWNSVL | TN |
| 2010-03-08 | 731-418-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUNTINGDON | TN |
| 2010-03-02 | 731-293-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | JACKSON | TN |
| 2010-02-02 | 731-213-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CAMDEN | TN |
| 2010-02-02 | 731-277-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BROWNSVL | TN |
| 2010-01-19 | 731-337-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HUMBOLDT | TN |
| 2010-01-07 | 731-388-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUMBOLDT | TN |
| 2010-01-06 | 731-236-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GRAND JCT | TN |
| 2010-01-06 | 731-468-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CAMDEN | TN |
| 2010-01-06 | 731-671-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | RIPLEY | TN |
| 2010-01-06 | 731-982-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SELMER | TN |
| 2010-01-05 | 731-326-2XXX | 2000–2999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | BROWNSVL | TN |
| 2009-12-07 | 731-418-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUNTINGDON | TN |
| 2009-12-07 | 731-882-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | DYERSBURG | TN |
| 2009-11-06 | 731-307-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | LEXINGTON | TN |
| 2009-11-06 | 731-478-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | DYERSBURG | TN |
| 2009-11-06 | 731-592-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | UNION CITY | TN |
| 2009-10-21 | 731-732-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | GRAND JCT | TN |
| 2009-09-28 | 731-924-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PARIS | TN |
| 2009-09-08 | 731-418-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUNTINGDON | TN |
| 2009-09-08 | 731-478-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | DYERSBURG | TN |
| 2009-08-18 | 731-478-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DYERSBURG | TN |
| 2009-08-18 | 731-518-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BOLIVAR | TN |
| 2009-08-10 | 731-618-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUMBOLDT | TN |
| 2009-08-05 | 731-249-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LEXINGTON | TN |
| 2009-07-16 | 731-215-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| 2009-07-13 | 731-215-7XXX | 7000–7999 | Assigned | ONVOY, LLC - TN | 525E | JACKSON | TN |
| 2009-07-08 | 731-358-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUNTINGDON | TN |
| 2009-07-08 | 731-478-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | DYERSBURG | TN |
| 2009-05-28 | 731-215-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| 2009-05-14 | 731-443-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BROWNSVL | TN |
| 2009-05-14 | 731-453-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | SELMER | TN |
| 2009-05-04 | 731-327-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MICHIE | TN |
| 2009-04-28 | 731-389-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | UNION CITY | TN |
| 2009-04-24 | 731-419-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RIPLEY | TN |
| 2009-04-09 | 731-618-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUMBOLDT | TN |
| 2009-03-24 | 731-215-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | JACKSON | TN |
| 2009-03-18 | 731-868-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| 2009-03-09 | 731-503-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | NEWBERN | TN |
| 2009-03-09 | 731-599-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | UNION CITY | TN |
| 2009-03-09 | 731-907-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | HORNBEAK | TN |
| 2009-03-06 | 731-478-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | DYERSBURG | TN |
| 2009-02-06 | 731-868-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| 2009-01-15 | 731-518-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BOLIVAR | TN |
| 2009-01-09 | 731-327-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | MICHIE | TN |
| 2009-01-06 | 731-358-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HUNTINGDON | TN |
| 2008-11-25 | 731-407-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | PARIS | 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.