Scan IPv4 prefixes for DNS revolvers and classify them as open/closed
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.gitignore Initial commit. Jan 30, 2013
LICENSE.txt Create LICENSE.txt Feb 17, 2014
README.md Fixed code block format Jan 30, 2013
dnsscan.py Replace timeout with lifetime Jan 4, 2014
dnsscan_threads.py Adding threaded code from DL (email me for contact info) Jun 19, 2014

README.md

usage: dnsscan.py [-h] [-t TIMEOUT] [-u URL] ...

Scan IPv4 prefixes for DNS resolvers

positional arguments:
prefixes              prefixes to scan

optional arguments:
-h, --help            show this help message and exit
-t TIMEOUT, --timeout TIMEOUT
          timeout for each request
-u URL, --url URL     hostname to use as target