NumberResearchThousands-blocks in 205-525
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 205-525 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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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 205-525-0XXX | 0000–0999 | Reserved | BRIGHTSPEED OF ALABAMA, LLC - NORTHERN | 9789 | SURFSIDE | AL |
| — | 205-525-1XXX | 1000–1999 | Reserved | BRIGHTSPEED OF ALABAMA, LLC - NORTHERN | 9789 | SURFSIDE | AL |
| 2008-03-25 | 205-525-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | SURFSIDE | AL |
| 2023-01-10 | 205-525-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SURFSIDE | AL |
| — | 205-525-4XXX | 4000–4999 | Reserved | BRIGHTSPEED OF ALABAMA, LLC - NORTHERN | 9789 | SURFSIDE | AL |
| — | 205-525-5XXX | 5000–5999 | Reserved | BRIGHTSPEED OF ALABAMA, LLC - NORTHERN | 9789 | SURFSIDE | AL |
| 2019-05-10 | 205-525-6XXX | 6000–6999 | Assigned | ONVOY, LLC - AL | 604E | SURFSIDE | AL |
| 2019-05-10 | 205-525-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AL | 604E | SURFSIDE | AL |
| 2019-04-01 | 205-525-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AL | 604E | SURFSIDE | AL |
| 2019-04-01 | 205-525-9XXX | 9000–9999 | Assigned | ONVOY, LLC - AL | 604E | SURFSIDE | AL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.