PassiveScanner is a script that uses free online services to passively enumerate and scan a domain's parameter, without actually touching the target network. The tool uses DNSDumpster to enumerate DNS information for a given domain and then checks the IPs against Zoomeye (Chinese shodan). Future versions of the tool will also incorporate Scans.io/Censys.io data as well as pull ip addresses from ASN information to also 'scan'.
Usage:
PassiveScanner -d targetdomain.com
Python 2.7
pip install dnsdumpster