You can use the contact form to reach out to a domain holder for legal or technical matters, or if you are interested in acquiring the domain name from the holder. The form is available at the website of The Swedish Internet Foundation, https://internetstiftelsen.se/en/registrant-reachout/
To get in touch with a registrant whose contact details are not visible in the whois, it is possible to contact registry@internetstiftelsen.se and include the message and contact information that shall be forwarded. Registry Services will then send the message to the domain holders email address in The Swedish Internet Foundation’s register.
