NumberResearchThousands-blocks in 205-419
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 205-419 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 205 blocks
Most active assignees, all time — NPA 205
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 205-419-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | ALABASTER | AL |
| 2004-12-08 | 205-419-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | ALABASTER | AL |
| 2015-02-19 | 205-419-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | ALABASTER | AL |
| 2013-07-09 | 205-419-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | ALABASTER | AL |
| 2003-01-23 | 205-419-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | ALABASTER | AL |
| 2004-11-02 | 205-419-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | ALABASTER | AL |
| 2016-06-13 | 205-419-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | ALABASTER | AL |
| 2013-05-06 | 205-419-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | ALABASTER | AL |
| 2005-02-15 | 205-419-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | ALABASTER | AL |
| 2014-04-14 | 205-419-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | ALABASTER | AL |
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.