unhidens - Small DNS Recon utility, allows you to obtain some useful info about NS-servers placed behind relays & firewall.

unhidens – Small DNS Recon utility, allows you to obtain some useful info about NS-servers placed behind relays & firewall.

unhidens is python script for Small DNS Recon utility, allows you to obtain some useful info about NS-servers placed behind relays, firewalls, etc.
Dependencies:
+ Python 2.7.x
+ Requires ‘dig’ utility!

unhidens

Usage:

Source: https://github.com/german-namestnikov