Sub-Domain Name hijacking ?

Not sure what to call this, but it is some form of domain name hijacking

[cicru]

I own the domain name : Mysite.com (Example)
On google if I do a search for site:mysite.com blue widget

A lot of this stuff starts appearing in my search results
2046.personals.mysite.com

What is this type of jacking called ?
What can one do about it ?

Thanks for your tips

[creeking]

do the sites like "2046.personals.mysite.com" actually work?

what DNS are you using?

[draggar]

Some hosting companies will point non-used subdomains to their own parking pages, is it possible this is it?

[cicru]

Hi, yes these do work.
They are mainly pron pages.

[cicru]

The DNS is in the US but the IP is a Russian one.
How should I approach this ?

Can one ask for an IP to be black listed?

Any help appreciated.

[jdMorgan]

If possible, you should define a "Wild-card" DNS record for your domain, so that *all* possible subdomains will resolve to your server. Typically, it would look something like:

*.example.com. 86400 IN A 192.168.0.1

Note the trailing period on the domain name.

Having done that, add a 301-Redirect to redirect requests for all resources at all non-canonical hostnames to the same resources at the canonical hostname.

If you have a unique IP address for your server (whether it's on shared hosting or not), then you should be able to do all of this yourself. If you share an IP address with other sites hosted on the same server, then you may have to ask your host for help in order to get wild-card subdomains working.

Jim

[creeking]

change nameservers.

try using free 3rd party dns. if your domain registrar offers free dns, you could use that.