Unknown Words Inserted before the Website URL - Joomla K2

When I Google the article title from my website it shows some unknown character before the URL.

Eg: Assume my website name is example.com. I see some unknown characters as below when I search in Google.

facebookfotwww.example.com
y8www.example.com
uvylkqw.example.com
forum.example.com
snehsosowww.example.com

I am not sure where it is coming from and this looks weird.
Could anyone please help me to resolve this issue?

See the attachment for a clear picture.

 

I would like to add a point. We have recently migrated from our old HTML website to new Joomla K2.

 

Can anyone give a quick resolution on my above issue.

 

check cpanel for strange sub domains for starters.

N>

 

No Cpanel in Servage hosting.

 

There is no sub domain as well... If you see there many uknown prefixes adding before the site doman.

 

you can block unwanted links by robots.txt

 

I found it, this was due to some changes in the domain settings (The record type).
And everything got normal...

Thanks all...