If you purchased your domain from a registrar other than Yahoo!, you must contact that registrar to make any changes to your contact information. If you remember the company to which you paid your original domain registration fee, contact that organization directly.

If you've forgotten your registrar, you can look up your domain in the public WHOIS database, which will list the organization's name, using one of these WHOIS search tools:

• For domains ending .aero, .arpa, .biz, .com, .coop, .edu, .info, .int, .museum, .net, and .org, visit InterNIC or DNSstuff.com.
• For domains ending in .us, visit whois.us.
• For domains ending in a two-letter country code, such as .uk or .jp, try Uwhois.com.

Once you're on the WHOIS search page, enter your domain and review the results to find the name of your registrar.