DNSSEC is an extension of the Domain Name System (DNS) that serves to guarantee the authenticity and integrity of data from DNS responses. More about DNSSEC
The chart below shows the number of DNSSEC-signed domain names on the first of each month since SWITCH introduced DNSSEC in 2010. A sudden, sharp increase in the figures can be explained by additional hosting providers starting to activate DNSSEC automatically for all newly registered domain names or simplifying DNSSEC signing for existing domain names.
The following graphic shows the percentage of domain names with DNSSEC out of the total number of active domain names (i.e. domain names with registered name servers).