schnippets/python_utils/dns_lookup.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import socket

def get_hostname(host_or_ip):
    host_or_ip = socket.getfqdn(host_or_ip)

    try:
        return socket.gethostbyaddr(host_or_ip)[0]
    except socket.gaierror:
        return False

def get_aliases(host_or_ip):
    host_or_ip = socket.getfqdn(host_or_ip)

    try:
        return socket.gethostbyaddr(host_or_ip)[1]
    except socket.gaierror:
        return False

def get_ip_addrs(host_or_ip):
    host_or_ip = socket.getfqdn(host_or_ip)

    try:
        return socket.gethostbyaddr(host_or_ip)[2]
    except socket.gaierror:
        return False