NumberResearchRecent thousands-block assignments
0 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, all time — NPA 423
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 |
|---|---|---|---|---|---|---|---|
| 2026-07-02 | 423-960-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2025-08-12 | 423-960-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2022-11-08 | 423-513-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | VONORE | TN |
| 2022-01-25 | 423-740-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CLEVELAND | TN |
| 2021-04-09 | 423-459-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2021-04-05 | 423-560-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | ERWIN | TN |
| 2021-02-03 | 423-726-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | MIDWAY SUL | TN |
| 2021-01-25 | 423-897-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | FALLBRANCH | TN |
| 2020-11-30 | 423-604-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | ETOWAH | TN |
| 2020-08-06 | 423-659-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | COPPERBSIN | TN |
| 2020-07-28 | 423-640-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | SNEEDVILLE | TN |
| 2020-05-07 | 423-606-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | ENGLEWOOD | TN |
| 2020-03-26 | 423-419-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CUMBERLDGP | TN |
| 2019-11-01 | 423-380-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CLEVELAND | TN |
| 2019-10-02 | 423-219-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHARLESTON | TN |
| 2019-10-02 | 423-219-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHARLESTON | TN |
| 2019-08-14 | 423-459-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2019-07-09 | 423-712-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | BLUFF CITY | TN |
| 2019-07-09 | 423-850-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | JONESBORO | TN |
| 2019-06-25 | 423-228-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | SO PITTSBG | TN |
| 2019-06-25 | 423-259-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | NEWTAZWELL | TN |
| 2019-06-21 | 423-615-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | COLLEGEDL | TN |
| 2019-04-24 | 423-417-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2019-02-28 | 423-417-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2019-02-28 | 423-417-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2019-02-28 | 423-417-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2018-06-25 | 423-549-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | JOHNSON CY | TN |
| 2018-01-17 | 423-459-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2018-01-17 | 423-459-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2018-01-17 | 423-459-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2018-01-17 | 423-459-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2018-01-17 | 423-459-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2018-01-17 | 423-459-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2018-01-17 | 423-459-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2018-01-11 | 423-651-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | JASPER | TN |
| 2018-01-11 | 423-651-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | JASPER | TN |
| 2018-01-09 | 423-732-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | KINGSPORT | TN |
| 2017-07-13 | 423-481-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | ROAN MT | TN |
| 2017-07-13 | 423-528-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | BAILEYTON | TN |
| 2017-07-13 | 423-607-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | LIMESTONE | TN |
| 2017-06-30 | 423-482-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | BLOUNTVL | TN |
| 2017-01-11 | 423-690-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | MORRISTOWN | TN |
| 2016-12-22 | 423-445-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | SURGOINSVL | TN |
| 2016-10-21 | 423-871-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | LAFOLLETTE | TN |
| 2016-08-17 | 423-516-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | SULIVNGDNS | TN |
| 2016-08-04 | 423-518-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | ELIZABTHTN | TN |
| 2016-05-20 | 423-680-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2016-03-29 | 423-270-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | ERWIN | TN |
| 2016-03-07 | 423-454-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | DECATUR | TN |
| 2016-01-11 | 423-806-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | MIDWAY | 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.