NumberResearchThousands-blocks in 620-601
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 620-601 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
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-03-12 | 620-601-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PRATT | KS |
| 2025-05-02 | 620-601-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PRATT | KS |
| — | 620-601-2XXX | 2000–2999 | Available | PRATT | KS | ||
| — | 620-601-3XXX | 3000–3999 | Available | PRATT | KS | ||
| — | 620-601-4XXX | 4000–4999 | Available | PRATT | KS | ||
| — | 620-601-5XXX | 5000–5999 | Available | PRATT | KS | ||
| — | 620-601-6XXX | 6000–6999 | Available | PRATT | KS | ||
| — | 620-601-7XXX | 7000–7999 | Available | PRATT | KS | ||
| 2022-05-04 | 620-601-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PRATT | KS |
| 2022-05-04 | 620-601-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PRATT | KS |
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.