NumberResearchThousands-blocks in 660-223
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 660-223 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 660 blocks
Most active assignees, all time — NPA 660
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 660-223-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | WARSAW | MO |
| 2008-12-18 | 660-223-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | WARSAW | MO |
| 2009-06-10 | 660-223-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | WARSAW | MO |
| 2010-09-20 | 660-223-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | WARSAW | MO |
| 2005-01-05 | 660-223-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | WARSAW | MO |
| 2010-07-30 | 660-223-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | WARSAW | MO |
| 2012-05-07 | 660-223-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | WARSAW | MO |
| 2026-03-17 | 660-223-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WARSAW | MO |
| 2014-04-22 | 660-223-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | WARSAW | MO |
| 2018-09-28 | 660-223-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MO | 093F | WARSAW | MO |
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.