NumberResearchThousands-blocks in 571-252
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 571-252 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 571 blocks
Most active assignees, all time — NPA 571
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-07-22 | 571-252-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | LEESBURG | VA |
| 2005-03-22 | 571-252-1XXX | 1000–1999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | LEESBURG | VA |
| 2005-03-22 | 571-252-2XXX | 2000–2999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | LEESBURG | VA |
| 2005-04-26 | 571-252-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | LEESBURG | VA |
| 2016-11-01 | 571-252-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | LEESBURG | VA |
| 2006-11-10 | 571-252-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | LEESBURG | VA |
| 2006-10-23 | 571-252-6XXX | 6000–6999 | Assigned | VERIZON VIRGINIA, INC. | 9213 | LEESBURG | VA |
| 2006-11-10 | 571-252-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | LEESBURG | VA |
| 2008-01-22 | 571-252-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | LEESBURG | VA |
| 2008-11-07 | 571-252-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | LEESBURG | VA |
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.