无法正常解析。Unable to parse properly

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无法正常解析。Unable to parse properly.

Hey there,

A 521 error happens when we are unable to make a TCP connection to your origin server, typically because the connection was refused which often can be caused by security or firewall software.

Because Cloudflare operates as a reverse proxy the IP address your server will see is one of a limited number of Cloudflare IPs. In that sense, many actual visitors may all come from the same IP address, which can cause firewalls or security software that is not appropriately allowing the Cloudflare IP ranges to block this traffic as it may see it as excessive or malicious. We publish a full list of our IP ranges so that you can allowlist them accordingly.

I would make sure that your hosting provider confirms that the Cloudflare IP ranges listed in the URL above are fully allowed from any security software, firewall etc.

That being said, if this doesn’t cover the issue you’re facing - could you please provide screenshots of the issue, and always please provide the domain name and when it started to occur? (Any recent changes).

Thanks! :slight_smile:

同样的.com域名可以解析到我的公网ip xlgmy1015.uk这个域名不行正常解析,也ping不通,但是奇怪的是 我注册成功的时候可以解析到也能ping通 这是为什么。我换了dns也不行 前天上午偶尔能ping通了一下 是不是因为 服务器的问题

同样的.com域名可以解析到我的公网ip xlgmy1015.uk这个域名不行正常解析,也ping不通,但是奇怪的是 我注册成功的时候可以解析到也能ping通 这是为什么。我换了dns也不行 前天上午偶尔能ping通了一下 是不是因为 服务器的问题

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