NumberResearchThousands-blocks in 601-875
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 601-875 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 601 blocks
Most active assignees, all time — NPA 601
New assignments by month
Sep 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-06-13 | 601-875-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MS | 992E | CROSSROADS | MS |
| 2016-03-03 | 601-875-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MS | 719E | CROSSROADS | MS |
| 2016-03-03 | 601-875-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MS | 719E | CROSSROADS | MS |
| 2022-07-15 | 601-875-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CROSSROADS | MS |
| 2023-08-29 | 601-875-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MS | 719E | CROSSROADS | MS |
| — | 601-875-5XXX | 5000–5999 | Reserved | AT&T ENTERPRISES, LLC | 516C | CROSSROADS | MS |
| — | 601-875-6XXX | 6000–6999 | Available | CROSSROADS | MS | ||
| — | 601-875-7XXX | 7000–7999 | Assigned (pending) | CROSSROADS | MS | ||
| 2022-07-15 | 601-875-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CROSSROADS | MS |
| 2017-05-18 | 601-875-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CROSSROADS | MS |
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.