This domain is not supported or is already registered with zoho

This domain is not supported or is already registered with zoho

Hello zoho team, from few days i am trying to register my domain "mag-games.com" but i got this error "This domain is not supported or is already registered with zoho"
i am not remember any account register with this domain and cannot access or rest any info..
what i can do to restore my domain and make new account with it ?

i upload file on the domain for you
to verify domain:
http://mag-games.com/zoho.html

thanks...