RockCloud-基石云安全-官方博客
Domain Block Recovery: Distinguish DNS Pollution, ISP Blocking, and WeChat/QQ Interception, and Restore Without Changing Domain
When your business domain is inaccessible in some provinces or shows a blocked page in WeChat/QQ, frequently changing domains leads to user loss and broken promotion links. This article covers troubleshooting methods for DNS pollution, regional ISP hijacking, and social platform blocking, and explains how to achieve recovery without changing domains through DNS pollution cleaning, block recovery, and seamless 301 redirects.
How to Restore a Domain Blocked by WeChat Without Changing Domains: Diagnosis, Appeals, and Fallbacks
If a site won't open in WeChat but works in external browsers, it's likely an application-layer block by Tencent's security database. This guide covers the operational order: distinguish WeChat blocks from DNS poisoning, identify soft vs. hard blocks, complete remediation, file a webmaster appeal, use backup channels like Tencent Security Center and email, and implement UA-based fallback during the appeal process, plus when to consider professional domain unblocking services.
How to Recover a Domain Blocked by DNS Poisoning: Layered Diagnosis Before Cleaning or Reverse Proxy
A domain suddenly inaccessible in mainland China may not be DNS poisoning — this article provides a four-step check to confirm resolution-layer spoofing, rules out more common causes, and presents two recovery paths: temporary client-side self-rescue (DoH/DoT, hosts) and business-side recovery without changing the domain (poisoning cleaning, reverse proxy/high-defense CDN), plus post-recovery validation and recurrence monitoring.
