NumberResearchThousands-blocks in 572-726
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 572-726 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
Jul 2026
Jun 2026
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Apr 2026
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Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-06-29 | 572-726-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | ANADARKO | OK |
| 2024-03-07 | 572-726-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | ANADARKO | OK |
| 2024-03-05 | 572-726-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | ANADARKO | OK |
| 2022-02-24 | 572-726-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ANADARKO | OK |
| 2025-12-24 | 572-726-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ANADARKO | OK |
| 2026-03-05 | 572-726-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | ANADARKO | OK |
| — | 572-726-6XXX | 6000–6999 | Available | ANADARKO | OK | ||
| 2025-03-27 | 572-726-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ANADARKO | OK |
| 2024-09-05 | 572-726-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ANADARKO | OK |
| 2023-07-26 | 572-726-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF OKLAHOMA, LLC - OK | 384H | ANADARKO | OK |
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.