Prints IP address and expiration time for a domain. See first comment for usage.

dns_expire.py

#!/usr/bin/env python
# vim: set fileencoding=utf-8 filetype=python :
"""
Usage: dns_expire <domain>...
"""
import calendar
import time

import dns.resolver
from docopt import docopt


def remain(domain):
    x = dns.resolver.query(domain)
    now = calendar.timegm(time.gmtime())
    ip = x.response.answer[0][0].address
    remaining = x.expiration - calendar.timegm(time.gmtime())
    return ip, remaining


def main(domains):
    for domain in domains:
        ip, remain_sec = remain(domain)
        if remain_sec < 60:
            print '%s (%s): %d sec' % (domain, ip, remain_sec)
        else:
            print '%s (%s): %d sec (about %.1d min)' % (domain, ip, remain_sec, remain_sec / 60.0)


if __name__ == '__main__':
    args = docopt(__doc__)
    domains = args['<domain>']
    main(domains)

Requires dnspython and docopt.

sudo pip install dnspython docopt
\curl -L https://gist.github.com/felixhummel/6039174/raw/57f3bd7d58a1a40a6f42bcb5126b096dd03fccd3/dns_expire.py | python