Python lookup hostname from IP with 1 second timeout
>>> import socket>>> socket.gethostbyaddr("69.59.196.211")('stackoverflow.com', ['211.196.59.69.in-addr.arpa'], ['69.59.196.211'])For implementing the timeout on the function, this stackoverflow thread has answers on that.
What you're trying to accomplish is called Reverse DNS lookup.
socket.gethostbyaddr("IP") # => (hostname, alias-list, IP)http://docs.python.org/library/socket.html?highlight=gethostbyaddr#socket.gethostbyaddr
However, for the timeout part I have read about people running into problems with this. I would check out PyDNS or this solution for more advanced treatment.