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Article 3: What to do if your authoritative Domain Name Servers don’t know your IP Address.
Problem:
We can reach the authoritative DNS server fine, but it reports that it doesn’t know your IP address. In a browser this would appear as a “DNS error”.
Background:
The DNS test ensures that the IP address of your web site is available to people who want to visit your domain. When they type your domain name into their browser or click on a link to your site, their browser looks up your IP address on their local DNS server. Unless someone has used his or her ISP to connect to your site in the past few hours, the local DNS server will ask for an address from your “authoritative” DNS server. This is the DNS server that is registered with the official name service at InterNIC (http://www.internic.net/whois.html).
Possible Reasons:
1. Configuration error on the name server
Recommended Action:
Step 1. Have you changed ISPs recently? If so, we may be checking the wrong authoritative name server.
If you suspect we may be checking the wrong authoritative name server, it’s easy to confirm the information. To look up the official record of your name server visit http://www.internic.net/whois.html and type in your domain name with the extension but without www on the front.
Step 2. If we’re checking the right Name server, it seems to have a configuration problem that prevents it from resolving your domain name to an IP address. You should contact the administrator of your DNS server (usually your ISP) to have the problem resolved. The outage message we sent should contain all the information they need to investigate the issue.
As with all errors, if we can be of help resolving your problem please let us know by email to support@brandprotect.com or by calling toll-free (800) 724-4724 from within the United States or Canada, or (416) 269-7744 internationally.