In order to change information about a domain name Registrant you should enter the corresponding changes into RU-CENTER database:
Changing domain name Registrant's contact information in the Registrant object
Registrant's contact information includes: telephone number, fax number, e-mail addresses and postal address. Changes are entered on RU-CENTER's Web-server in the "Manage your account" section.
The order of changing contact information:
Changing Registrant's identification information in the Agreement
Registrant's identification information includes: company name, legal address, TIN, full name, passport data, date of birth. Changing the identification information is made under the Registrant's official letter to RU-CENTER.
Changing Registrant's identification information in the Agreement (form) will be made within 2 (two) business days from the moment RU-CENTER receives the Registrant's letter.