NumberResearchThousands-blocks in 572-777
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 572-777 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 572 blocks
Most active assignees, all time — NPA 572
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-01-24 | 572-777-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | HARRAH | OK |
| 2023-04-13 | 572-777-1XXX | 1000–1999 | Assigned | WIRETAP TELECOM, LLC. | 733J | HARRAH | OK |
| 2024-12-23 | 572-777-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HARRAH | OK |
| — | 572-777-3XXX | 3000–3999 | Available | HARRAH | OK | ||
| — | 572-777-4XXX | 4000–4999 | Available | HARRAH | OK | ||
| — | 572-777-5XXX | 5000–5999 | Available | HARRAH | OK | ||
| 2022-03-11 | 572-777-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HARRAH | OK |
| 2021-03-26 | 572-777-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HARRAH | OK |
| 2023-07-14 | 572-777-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OK | 409F | HARRAH | OK |
| 2023-08-30 | 572-777-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF OKLAHOMA, LLC - OK | 384H | HARRAH | OK |
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.