Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

It's possible to set up several servers with the same IP-address, on the internet, using anycast address. Using routing protocols , the server geographical closest to you responds to queries.

I simply wonder if it is possible to determine how many servers is connected to one IP address?

Also is it possible to find the other ip addresses for them?

share|improve this question

You could probably check some BGP looking-glass servers around the world and get a pretty good idea of how many endpoints are advertised for the ASN.... whether or not they are being anycasted or represent a multi-homed site is something you can't necessarily determine though.

share|improve this answer
Do you mean that this is not a solvable problem, or do you mean that this is a solvable problem but the solution is expensive? How will someone who is willing to spend resources go about figuring how many servers is connected to an anycast address? – Pacerier May 13 '14 at 8:30

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.