Who administers my domain name? Who can I contact if changes are necessary?
For everything concerning your .ch domain name, please contact the registrar of the domain name in question. If you are unsure which registrar is administering your domain name: Find customer service
General questions about domain names
What is a domain name? What's the point of a domain name? How and where can I register domain names? What is a registrar? How can I change my registrar? What rules apply for domain names? Plus other topics.
Questions about malware and phishing
What is malware, and what do "drive-by" and "phishing" mean? Why does SWITCH take action with regard to malware and phishing on .ch and .li websites? What is the procedure for domain names that are being misused? Plus other topics.
IDN - Internationalized Domain Names
Information on domain names with umlauts and accents.
DNSSEC is an extension of the domain name system (DNS), which serves to ensure the authenticity and integrity of the data in DNS answers.
Domain Check (Whois-is)
Domain Check tells you whether or not a particular domain name can be registered. You should use this rather than the Whois service if you wish to provide a search function for .ch and .li domain names on your website or in your application.
Definitions of domain name and Internet terms.