NumberResearchThousands-blocks in 458-228
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 458-228 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 458 blocks
Most active assignees, all time — NPA 458
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-12-05 | 458-228-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | SUMPTER | OR |
| — | 458-228-1XXX | 1000–1999 | Available | SUMPTER | OR | ||
| 2019-08-26 | 458-228-2XXX | 2000–2999 | Assigned | ONVOY, LLC - OR | 750E | SUMPTER | OR |
| 2018-09-21 | 458-228-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF OREGON, LLC - OR | 157F | SUMPTER | OR |
| 2019-08-26 | 458-228-4XXX | 4000–4999 | Assigned | ONVOY, LLC - OR | 750E | SUMPTER | OR |
| 2020-09-03 | 458-228-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | SUMPTER | OR |
| 2020-09-03 | 458-228-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | SUMPTER | OR |
| 2020-02-21 | 458-228-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF OREGON, LLC - OR | 157F | SUMPTER | OR |
| 2018-10-23 | 458-228-8XXX | 8000–8999 | Assigned | INVOXIO INCORPORATED | 158H | SUMPTER | OR |
| 2018-10-02 | 458-228-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | SUMPTER | OR |
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.