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Steven Parratt avatar Server

AWS Route53 Configuration creating random subdomains

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Steven Parratt

The following article describes the issues I'm currently having with a domain:

Somebody created subdomain without my knowledge. How?

Random subdomains are being created and indexed with search engines, and none of these subdomains are in the DNS config. The only difference is that I'm using Route 53 and not some dodgy free DNS service.

I have a domain askmarina.net. I've put this site live and started testing some search terms to see how we rank. For some reason when I type in something like 'Javea locksmith ask marina' into Google there appears to be random subdomains appearing:

Google search results for Ask Marina

These random subdomains are not a part of my DNS config, and they seem to be stopping the apex domain from ranking at all. They just seem to be randomly creating themselves. I read into a similar issue below and decided the best option would be to remove the wildcard record from the Route 53 config:

Random Sub Domains being generated

These subdomains used to be an exact mirror of the website (just at semi.askmarina.net for example), however since removing the wildcard record all of these domains return a DNS_PROBE_FINISHED_NXDOMAIN error:

http://trainy.askmarina.net/

Does anyone have any insight into what might be happening here? I've exhausted my resources with this issue now, any help would be greatly appreciated.

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