NumberResearchThousands-blocks in 205-303
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 205-303 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
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 205-303-0XXX | 0000–0999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | FAYETTE | AL |
| 2019-03-14 | 205-303-1XXX | 1000–1999 | Assigned | ONVOY, LLC - AL | 604E | FAYETTE | AL |
| 2017-09-22 | 205-303-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | FAYETTE | AL |
| 2018-08-24 | 205-303-3XXX | 3000–3999 | Assigned | ONVOY, LLC - AL | 604E | FAYETTE | AL |
| 2018-12-19 | 205-303-4XXX | 4000–4999 | Assigned | ONVOY, LLC - AL | 604E | FAYETTE | AL |
| 2019-01-28 | 205-303-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - AL | 072F | FAYETTE | AL |
| 2016-08-17 | 205-303-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - AL | 8271 | FAYETTE | AL |
| 2014-02-25 | 205-303-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FAYETTE | AL |
| 2018-12-19 | 205-303-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AL | 604E | FAYETTE | AL |
| 2014-02-05 | 205-303-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | FAYETTE | 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.