NumberResearchThousands-blocks in 405-656
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 405-656 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
May 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-04-10 | 405-656-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | BINGER | OK |
| — | 405-656-1XXX | 1000–1999 | Reserved | SOUTHWESTERN BELL | 9533 | BINGER | OK |
| — | 405-656-2XXX | 2000–2999 | Reserved | SOUTHWESTERN BELL | 9533 | BINGER | OK |
| 2016-01-25 | 405-656-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF OKLAHOMA, LLC - OK | 384H | BINGER | OK |
| 2025-08-19 | 405-656-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BINGER | OK |
| 2018-03-23 | 405-656-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OK | 409F | BINGER | OK |
| 2013-08-15 | 405-656-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA OK - LLC | 530C | BINGER | OK |
| 2021-01-08 | 405-656-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | BINGER | OK |
| 2018-12-28 | 405-656-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BINGER | OK |
| — | 405-656-9XXX | 9000–9999 | Reserved | SOUTHWESTERN BELL | 9533 | BINGER | OK |
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.