rdns.py

A simple python script using viewdns.info to scan the IP history of a given domain.
Usage:

python rdns.py nsa.gov

Result:

12.120.106.185
23.54.180.73
23.36.84.226
23.66.212.226
23.197.34.6
104.97.85.36
23.50.66.8
...