NumberResearchThousands-blocks in 620-523
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 620-523 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 620 blocks
Most active assignees, all time — NPA 620
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-04-06 | 620-523-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | DODGE CITY | KS |
| 2020-10-21 | 620-523-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - KS | 986E | DODGE CITY | KS |
| — | 620-523-2XXX | 2000–2999 | Available | DODGE CITY | KS | ||
| 2015-06-16 | 620-523-3XXX | 3000–3999 | Assigned | UNITED WIRELESS COMMUNICATIONS, INC. - KS | 642H | DODGE CITY | KS |
| 2023-07-13 | 620-523-4XXX | 4000–4999 | Assigned | ONVOY, LLC - KS | 205F | DODGE CITY | KS |
| 2021-12-23 | 620-523-5XXX | 5000–5999 | Assigned | IDEATEK TELCOM, LLC - KS | 014E | DODGE CITY | KS |
| 2023-07-13 | 620-523-6XXX | 6000–6999 | Assigned | ONVOY, LLC - KS | 205F | DODGE CITY | KS |
| 2023-07-13 | 620-523-7XXX | 7000–7999 | Assigned | ONVOY, LLC - KS | 205F | DODGE CITY | KS |
| 2023-07-13 | 620-523-8XXX | 8000–8999 | Assigned | ONVOY, LLC - KS | 205F | DODGE CITY | KS |
| 2023-07-13 | 620-523-9XXX | 9000–9999 | Assigned | ONVOY, LLC - KS | 205F | DODGE CITY | KS |
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.