Every day ‘crawls’ Google 20 billion websites. This is evident from an interview that the lead designer of Googles search engine has given to Bloomberg. In total, there are according to Google 30 trillion unique addresses on the web.
Per month Google receives in addition, 100 billion searches, according to Wiley. The internet is still greater; according to Google there are currently 30 trillion unique addresses on the internet. Probably means the company urls and not domain names, but clearly is not.