NumberResearchThousands-blocks in 405-233
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 405-233 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 405 blocks
Most active assignees, all time — NPA 405
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-12-16 | 405-233-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF OKLAHOMA, LLC - OK | 384H | ARCADIA | OK |
| 2021-06-28 | 405-233-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | ARCADIA | OK |
| — | 405-233-2XXX | 2000–2999 | Reserved | PAETEC ITEL, LLC | 829J | ARCADIA | OK |
| 2010-01-21 | 405-233-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | ARCADIA | OK |
| 2013-03-07 | 405-233-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | ARCADIA | OK |
| 2026-03-05 | 405-233-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | ARCADIA | OK |
| 2010-06-29 | 405-233-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | ARCADIA | OK |
| 2026-08-20 | 405-233-7XXX | 7000–7999 | Assigned | OPENTACT INC. | 824J | ARCADIA | OK |
| 2014-06-13 | 405-233-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | ARCADIA | OK |
| 2021-06-28 | 405-233-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | ARCADIA | OK |
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.