convert IP to hostname [duplicate]

Answer 1

Socket library has an API to do reverse DNS lookups.

import socket
socket.gethostbyaddr("8.8.8.8")
>>> ('google-public-dns-a.google.com', [], ['8.8.8.8'])

Keep in mind that not all IP addresses will have reverse DNS entries, not all aliases might be present in the answer to this query etc.

Answer 2

The closest you're likely to get is socket.getfqdn(). It incorporates the results from gethostbyaddr(). Pass it an IP address as a string.