Domain name registration's statistics
Daily DNS Changes & Web Hosting Activity - DailyChanges.DomainTools.com
Rightside Domains Across the Globe - Rightside Blog
What is the percentage of owned domains that are parked (rather than running a real website)?
What percentage of domain names have active websites running?
Verisign Report May Indicate That The Number Of Parked Domains Looks To Be In Significant Decline
• Usage of top level domains for websites 2015 | Statistic
Parked Domain providers Web Usage Statistics
Impressive domain name stats from Escrow.com | Domain Name Wire
ICANN Research - TLD DNSSEC Report
Majority of Businesses with Fewer Than Five Employees Don't Have a Website: GoDaddy Report
RegistrarStats - TLD Statistics, Domain research tools
Usage Statistics of Top Level Domains for Websites, May 2015
220 Million Top-Level Domains: A Breakdown | Practical Ecommerce
Daily DNS Changes & Web Hosting Activity - DailyChanges.com
HosterStats.com: Domain Registration Statistics And Historical DNS Database
Domain Counts provided by Domain Worldwide
Country-wise Total Domains
Domain Counts & Internet Statistics | Whois Source
Subdomains and websites networks on Wholinks.org