NumberResearchThousands-blocks in 572-220
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 572-220 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
Aug 2026
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Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-16 | 572-220-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | STILLWATER | OK |
| 2022-08-06 | 572-220-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | STILLWATER | OK |
| 2023-09-05 | 572-220-2XXX | 2000–2999 | Assigned | ONVOY, LLC - OK | 409F | STILLWATER | OK |
| 2022-11-16 | 572-220-3XXX | 3000–3999 | Assigned | ONVOY, LLC - OK | 409F | STILLWATER | OK |
| 2022-11-16 | 572-220-4XXX | 4000–4999 | Assigned | ONVOY, LLC - OK | 409F | STILLWATER | OK |
| 2022-11-22 | 572-220-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | STILLWATER | OK |
| 2026-04-24 | 572-220-6XXX | 6000–6999 | Assigned | ONVOY, LLC - OK | 409F | STILLWATER | OK |
| 2022-02-23 | 572-220-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | STILLWATER | OK |
| 2022-02-23 | 572-220-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | STILLWATER | OK |
| 2022-02-23 | 572-220-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | STILLWATER | 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.