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 |
|---|---|---|---|---|---|---|---|
| 2011-04-29 | 731-393-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MCKENZIE | TN |
| 2011-04-29 | 731-707-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BIG SANDY | TN |
| 2011-04-29 | 731-837-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MIDDLETON | TN |
| 2011-04-29 | 731-859-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WHITEVILLE | TN |
| 2011-04-29 | 731-903-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HALLS | TN |
| 2011-04-28 | 731-214-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CEDARGROVE | TN |
| 2011-03-10 | 731-681-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | GLEASON | TN |
| 2011-02-22 | 731-293-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | JACKSON | TN |
| 2011-02-22 | 731-293-7XXX | 7000–7999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | JACKSON | TN |
| 2011-02-21 | 731-249-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | LEXINGTON | TN |
| 2011-02-21 | 731-300-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | JACKSON | TN |
| 2011-02-21 | 731-300-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | JACKSON | TN |
| 2011-02-21 | 731-325-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | DYERSBURG | TN |
| 2011-02-21 | 731-333-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | PARIS | TN |
| 2011-02-11 | 731-681-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | GLEASON | TN |
| 2011-02-07 | 731-259-8XXX | 8000–8999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | DYERSBURG | TN |
| 2011-02-03 | 731-271-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | SO FULTON | TN |
| 2011-01-11 | 731-859-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | WHITEVILLE | TN |
| 2011-01-05 | 731-868-5XXX | 5000–5999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | JACKSON | TN |
| 2011-01-05 | 731-868-6XXX | 6000–6999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | JACKSON | TN |
| 2010-12-30 | 731-723-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | MILAN | TN |
| 2010-12-29 | 731-337-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HUMBOLDT | TN |
| 2010-12-17 | 731-223-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | SO FULTON | TN |
| 2010-12-03 | 731-300-0XXX | 0000–0999 | Assigned | JACKSON ENERGY AUTHORITY - TN | 150G | JACKSON | TN |
| 2010-10-22 | 731-506-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| 2010-10-20 | 731-540-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PARIS | TN |
| 2010-09-24 | 731-307-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | LEXINGTON | TN |
| 2010-09-24 | 731-333-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | PARIS | TN |
| 2010-08-31 | 731-435-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HENDERSON | TN |
| 2010-08-10 | 731-418-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | HUNTINGDON | TN |
| 2010-08-09 | 731-213-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CAMDEN | TN |
| 2010-08-09 | 731-313-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | JACKSON | TN |
| 2010-07-16 | 731-337-2XXX | 2000–2999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | HUMBOLDT | TN |
| 2010-05-25 | 731-307-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEXINGTON | TN |
| 2010-05-21 | 731-307-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | LEXINGTON | TN |
| 2010-05-21 | 731-540-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | PARIS | TN |
| 2010-05-20 | 731-882-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | DYERSBURG | TN |
| 2010-05-18 | 731-499-6XXX | 6000–6999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | JACKSON | TN |
| 2010-05-18 | 731-499-7XXX | 7000–7999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | JACKSON | TN |
| 2010-05-11 | 731-327-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | MICHIE | TN |
| 2010-05-06 | 731-506-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| 2010-05-06 | 731-506-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| 2010-04-29 | 731-882-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | DYERSBURG | TN |
| 2010-04-15 | 731-599-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | UNION CITY | TN |
| 2010-04-09 | 731-223-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | SO FULTON | TN |
| 2010-03-26 | 731-277-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | BROWNSVL | TN |
| 2010-03-26 | 731-277-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | BROWNSVL | TN |
| 2010-03-22 | 731-298-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | JACKSON | TN |
| 2010-03-18 | 731-389-4XXX | 4000–4999 | Assigned | POWERTEL MEMPHIS LICENSES, INC. | 7474 | UNION CITY | TN |
| 2010-03-11 | 731-215-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | JACKSON | 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.