NumberResearchThousands-blocks in 620-440
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 620-440 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
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 620-440-0XXX | 0000–0999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS | 6532 | WELLINGTON | KS |
| — | 620-440-1XXX | 1000–1999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS | 6532 | WELLINGTON | KS |
| 2006-10-11 | 620-440-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS | 6532 | WELLINGTON | KS |
| 2017-01-09 | 620-440-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - KS | 986E | WELLINGTON | KS |
| 2004-12-16 | 620-440-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | WELLINGTON | KS |
| 2012-12-12 | 620-440-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WELLINGTON | KS |
| 2008-10-28 | 620-440-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - KS | 986E | WELLINGTON | KS |
| — | 620-440-7XXX | 7000–7999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS | 6532 | WELLINGTON | KS |
| — | 620-440-8XXX | 8000–8999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS | 6532 | WELLINGTON | KS |
| — | 620-440-9XXX | 9000–9999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS | 6532 | WELLINGTON | 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.