NumberResearchRecent thousands-block assignments
13 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 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 |
|---|---|---|---|---|---|---|---|
| 2025-09-17 | 423-720-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | NEWPORT | TN |
| 2025-09-17 | 423-997-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ELIZABTHTN | TN |
| 2025-09-12 | 423-389-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MIDWAY SUL | TN |
| 2025-09-12 | 423-408-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | KINGSPORT | TN |
| 2025-09-12 | 423-550-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MIDWAY | TN |
| 2025-09-12 | 423-823-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GREENEVL | TN |
| 2025-09-12 | 423-858-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BLOUNTVL | TN |
| 2025-09-12 | 423-868-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MOSHEIM | TN |
| 2025-09-12 | 423-900-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | JOHNSON CY | TN |
| 2025-09-10 | 423-228-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | SO PITTSBG | TN |
| 2025-09-10 | 423-289-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MORRISTOWN | TN |
| 2025-09-10 | 423-406-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | MIDWAY SUL | TN |
| 2025-09-10 | 423-594-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | DAYTON | TN |
| 2025-09-10 | 423-759-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | MORRISTOWN | TN |
| 2025-09-10 | 423-766-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | LIMESTONE | TN |
| 2025-09-10 | 423-818-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | JELLICO | TN |
| 2025-09-10 | 423-845-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | BRISTOL | TN |
| 2025-09-09 | 423-659-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | COPPERBSIN | TN |
| 2025-09-09 | 423-671-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2025-09-09 | 423-671-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2025-09-09 | 423-671-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2025-09-09 | 423-671-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2025-09-03 | 423-665-6XXX | 6000–6999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2025-08-27 | 423-761-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | COPPERBSIN | TN |
| 2025-08-20 | 423-665-2XXX | 2000–2999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2025-08-20 | 423-665-5XXX | 5000–5999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2025-08-13 | 423-992-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BRISTOL | TN |
| 2025-08-12 | 423-960-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2025-08-07 | 423-374-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | LAFOLLETTE | TN |
| 2025-08-07 | 423-398-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | KINGSPORT | TN |
| 2025-08-07 | 423-812-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | GREENEVL | TN |
| 2025-08-07 | 423-969-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CLEVELAND | TN |
| 2025-08-07 | 423-997-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | ELIZABTHTN | TN |
| 2025-07-29 | 423-203-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHATTNOOGA | TN |
| 2025-07-29 | 423-220-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ERWIN | TN |
| 2025-07-29 | 423-278-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | GREENEVL | TN |
| 2025-07-29 | 423-382-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SNEEDVILLE | TN |
| 2025-07-29 | 423-437-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LAFOLLETTE | TN |
| 2025-07-29 | 423-868-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MOSHEIM | TN |
| 2025-07-29 | 423-957-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HAMPTON | TN |
| 2025-07-29 | 423-960-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHATTNOOGA | TN |
| 2025-07-23 | 423-780-6XXX | 6000–6999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2025-07-22 | 423-924-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | JOHNSON CY | TN |
| 2025-07-17 | 423-259-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEWTAZWELL | TN |
| 2025-07-17 | 423-363-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HUNTSVILLE | TN |
| 2025-07-17 | 423-572-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ENGLEWOOD | TN |
| 2025-07-17 | 423-701-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ROBBINS | TN |
| 2025-07-17 | 423-966-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BALL PLAY | TN |
| 2025-07-16 | 423-219-4XXX | 4000–4999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2025-07-15 | 423-808-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TELLICO PL | 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.