NumberResearchThousands-blocks in 458-255
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 458-255 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, last 30 days — NPA 458
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-09-29 | 458-255-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - OR | 6349 | HERMISTON | OR |
| 2022-10-11 | 458-255-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | HERMISTON | OR |
| 2026-09-09 | 458-255-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HERMISTON | OR |
| 2023-05-03 | 458-255-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | HERMISTON | OR |
| 2022-11-09 | 458-255-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | HERMISTON | OR |
| 2023-09-21 | 458-255-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OR | 750E | HERMISTON | OR |
| 2023-10-24 | 458-255-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | HERMISTON | OR |
| 2021-10-21 | 458-255-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | HERMISTON | OR |
| 2022-10-19 | 458-255-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HERMISTON | OR |
| 2021-10-21 | 458-255-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | HERMISTON | 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.