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 |
|---|---|---|---|---|---|---|---|
| 2025-07-15 | 423-866-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NIOTA | TN |
| 2025-07-11 | 423-978-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | CHATTNOOGA | TN |
| 2025-07-11 | 423-981-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | JOHNSON CY | TN |
| 2025-06-30 | 423-401-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SODDYDAISY | TN |
| 2025-06-30 | 423-969-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2025-06-30 | 423-969-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2025-06-26 | 423-792-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | OAKDALE | TN |
| 2025-06-26 | 423-945-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | COLLEGESTA | TN |
| 2025-06-03 | 423-919-4XXX | 4000–4999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | NEWTAZWELL | TN |
| 2025-05-30 | 423-951-5XXX | 5000–5999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2025-05-20 | 423-859-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TN | 525E | ROGERSVL | TN |
| 2025-04-30 | 423-214-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-214-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-214-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-214-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-572-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-606-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-606-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-606-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-606-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-606-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-606-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-606-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-887-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-887-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-29 | 423-951-4XXX | 4000–4999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2025-04-24 | 423-960-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CHATTNOOGA | TN |
| 2025-04-02 | 423-951-3XXX | 3000–3999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2025-03-26 | 423-709-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLEVELAND | TN |
| 2025-03-24 | 423-766-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | LIMESTONE | TN |
| 2025-03-18 | 423-487-6XXX | 6000–6999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | NEWPORT | TN |
| 2025-03-18 | 423-613-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | NEWPORT | TN |
| 2025-03-18 | 423-749-3XXX | 3000–3999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | COLLEGEDL | TN |
| 2025-03-18 | 423-919-3XXX | 3000–3999 | Assigned | POWERTEL NASHVILLE LICENSES, INC. | 7476 | NEWTAZWELL | TN |
| 2025-03-18 | 423-919-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | NEWTAZWELL | TN |
| 2025-03-14 | 423-395-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | ATHENS | TN |
| 2025-03-12 | 423-898-1XXX | 1000–1999 | Assigned | POWERTEL ATLANTA LICENSES, INC. | 7473 | CHARLESTON | TN |
| 2025-03-10 | 423-924-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | JOHNSON CY | TN |
| 2025-02-25 | 423-287-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2025-02-25 | 423-315-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| 2025-02-25 | 423-671-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | 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.