The guys at moonsearch state that we know nothing about the size of Internet. Like there's 1 billion sites around, but nobody knows for sure how much. Can that be true?
Another great example of the problem is an age-old question: how many sites are there in the internet?
In 1996 we could answer more or less precisely counting the IP addresses. Today’s picture is different.
Lets analyse Google’s first SERP on the question. Different sources give different results: the total number of sites is either 346 million, or 759 million, or 1.19 billion according to resources that rank highest in Google’s results.
Authoritative Netcraft (which isn’t in the Google Top-10 Search Results) gives the number 958,919,789; another “authoritative” blog citing Netcraft says the company sees “1-2 billions” pages.
There are lots of other sources giving different numbers for this one, simple question.
It seems like the actual number of sites is impossible to get
They tell, that in spite we are all that digital and mathematical, we, humans, don't even know the size of the Internet we have created.