NumberResearchThousands-blocks in 423-960
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 423-960 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 423 blocks
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 |
|---|---|---|---|---|---|---|---|
| 2025-02-24 | 423-960-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | CHATTNOOGA | TN |
| 2025-04-24 | 423-960-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CHATTNOOGA | TN |
| 2026-08-24 | 423-960-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | CHATTNOOGA | TN |
| — | 423-960-3XXX | 3000–3999 | Available | CHATTNOOGA | TN | ||
| 2025-07-29 | 423-960-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHATTNOOGA | TN |
| 2026-04-28 | 423-960-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF TENNESSEE, LLC - TN | 276F | CHATTNOOGA | TN |
| 2025-08-12 | 423-960-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | TN |
| 2026-01-08 | 423-960-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CHATTNOOGA | TN |
| — | 423-960-8XXX | 8000–8999 | Assigned (pending) | CHATTNOOGA | TN | ||
| 2026-07-02 | 423-960-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | CHATTNOOGA | 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.