NumberResearchThousands-blocks in 660-236
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 660-236 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 660-236-0XXX | 0000–0999 | Reserved | SOUTHWESTERN BELL | 9533 | MARSHALL | MO |
| 2015-07-28 | 660-236-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | MARSHALL | MO |
| 2015-02-06 | 660-236-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | MARSHALL | MO |
| 2013-12-12 | 660-236-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MARSHALL | MO |
| 2014-03-12 | 660-236-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7594 | MARSHALL | MO |
| 2014-02-27 | 660-236-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MARSHALL | MO |
| 2009-08-19 | 660-236-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MARSHALL | MO |
| 2009-04-10 | 660-236-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | MARSHALL | MO |
| 2015-04-15 | 660-236-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | MARSHALL | MO |
| 2017-03-07 | 660-236-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | MARSHALL | 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.