You may try on our website a utility called “whois” that will tell you whether or not the domain name is taken or not.
To renew your domains, you will have to go to your registrar and handle it there.
You can arrange with your registrar acces to control panel administration for the domain so you can change out any information you like for the domain name contacts.
Remember that not all registration services register all tlds. If you need another type of domain name extension please look further…