NumberResearchThousands-blocks in 570-731
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 570-731 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 570 blocks
Most active assignees, all time — NPA 570
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-11-12 | 570-731-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | SAYRE | PA |
| 2013-11-19 | 570-731-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | SAYRE | PA |
| 2025-04-08 | 570-731-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SAYRE | PA |
| 2010-06-15 | 570-731-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | SAYRE | PA |
| 2004-07-21 | 570-731-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SAYRE | PA |
| 2024-06-21 | 570-731-5XXX | 5000–5999 | Assigned | ONVOY, LLC - PA | 547E | SAYRE | PA |
| 2013-06-21 | 570-731-6XXX | 6000–6999 | Assigned | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | SAYRE | PA |
| 2009-06-23 | 570-731-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SAYRE | PA |
| 2017-04-24 | 570-731-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | SAYRE | PA |
| 2013-09-25 | 570-731-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | SAYRE | PA |
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.