Question

How many servers do we have on this planet????

Answer 1

Well, publicly available servers have an obvious maximum of the number of available IPs. You can do IP-sharing tricks of course but those are relatively rare. The only minimum number I can think of is how many netcraft servers are in the same national IP block.

This is skating right over the issues of private, internal webservers, webservers behind load balancers, firewalls, private-IP space, embedded webservers for things like print servers and other appliances and of course webservers not serving on port 80.

The only way I can think of to get an even reasonably accurate count of anything at all would be to limit yourself to publicly available webservers on port 80 and just portscan the entire national IP block. For the US this is obviously impractical unless a botnet owner owes you some favors or you want to drop coin on enough EC2 instances to make it take less than a year, but for smaller countries it ought to be somewhere between feasible and practical. Note that I didn't say legal, not a lawyer, etc.

Use Netcraft's data for estimating the number of servers by country

Answer 2

Thank you very much Gary,

Answer 3

THEN GIVE ME A MEDAL

Answer 4

we have max no of servers bt on d other hand we have small servers which we call it as distributed database ........