NumberResearchThousands-blocks in 571-222
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 571-222 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
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-09-28 | 571-222-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HAYMARKET | VA |
| — | 571-222-1XXX | 1000–1999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | HAYMARKET | VA |
| 2005-05-10 | 571-222-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | HAYMARKET | VA |
| 2009-03-17 | 571-222-3XXX | 3000–3999 | Assigned | CORETEL VIRGINIA, LLC - VA | 5832 | HAYMARKET | VA |
| 2007-11-06 | 571-222-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | HAYMARKET | VA |
| 2011-06-01 | 571-222-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | HAYMARKET | VA |
| 2012-02-08 | 571-222-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | HAYMARKET | VA |
| 2005-03-08 | 571-222-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | HAYMARKET | VA |
| — | 571-222-8XXX | 8000–8999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | HAYMARKET | VA |
| — | 571-222-9XXX | 9000–9999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | HAYMARKET | 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.