NumberResearchThousands-blocks in 419-558
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 419-558 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 419 blocks
Most active assignees, all time — NPA 419
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 419-558-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | ADA | OH |
| 2007-04-23 | 419-558-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ADA | OH |
| 2007-08-08 | 419-558-2XXX | 2000–2999 | Assigned | TIER 2 COMMUNICATIONS, LLC | 8168 | ADA | OH |
| 2015-01-23 | 419-558-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | ADA | OH |
| 2005-02-08 | 419-558-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | ADA | OH |
| 2015-11-11 | 419-558-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | ADA | OH |
| 2008-12-04 | 419-558-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | ADA | OH |
| 2013-11-22 | 419-558-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ADA | OH |
| 2016-03-28 | 419-558-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OH | 464C | ADA | OH |
| — | 419-558-9XXX | 9000–9999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | ADA | OH |
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.