Before the use of dnspod.cn analysis, there is no problem. Because I want to do the server analysis according to different countries (Europe, Asia, the United States) and then go to the dnspod.com inside have by the country to divide.
But Europe's response is that it can't access the site on a daily basis. But in the domestic and basically is good. It was always thought that the server was not stable enough.
Messages sent to this domain in the first 2 days are also returned. Engineers have occasionally found "hostname not found". It is now essential to determine the DNS server issue.
The international version is not stable in the domestic version. decided to use Alidns and dnspod.cn mix to parse. Set 4 namserver.
The first 2 are ns1.alidns.com, ns2.alidns.com after 2 will be changed to F1g1ns1.dnspod.net,f1g1ns2.dnspod.net
Dnspod documents are not recommended for mashup and will be DNS confusion as usual. I think chaos is better than no access.
This document: Domain DNS server settings cannot be mixed with multiple different name servers
DNS Domain name resolution