Google Adsense IDs
Google Analytics IDs
Here are the information Sitenum is providing.
Website's domain, ip address, title, description, etc
Complete information about domain after Whois Lookup
Http headers used in one request-response cycle
General information about HTML document used by browsers and search engines
Records related to domain name server like A, CNAME, MX, etc
Information on SSL certificate used to authenticate the identity of website.
Details of IP(Internet Protocol) address like city, status, country, timezone, etc
Rankings, statistics and search engine indexes related to domain
Here are the basic support features provided to users.