Failed to retrieve the DNS server information. Check the settings of the DNS server and domain name

Hi all,


I tried to bind a custom domain to alibabacloud DNS but after 2 hours the DNS page still showing:
Failed to retrieve the DNS server information. Check the settings of the DNS server and domain name authentication.


Futhre check :  Which the record of registrar has point to ns7 & ns8.

Change DNS Server to
ns7.alidns.com	ns7.alidns.com
ns8.alidns.com	ns8.alidns.com

Typically how long do we need to wait for the propogation to complete.

Depending on the type of suffix, it may take up to 48 hours for domain name resolution to take effect on the new DNS server, and to be fully synchronized to global DNS. During the DNS server switchover period, some DNS query requests are directed to the new DNS server, while others continue to be directed to the old server. You must ensure that the domain name record is the same on the new and old DNS servers, and do not perform any operations during the DNS switchover period. If the domain name resolution does not take effect, check whether your DNS server is changed during the 48/24 hours.

Refer:
https://www.alibabacloud.com/help/doc-detail/58458.htm