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Dug

Description: A powerful global DNS propagation checker that can output in a variety of formats.
Interface: CLI
License: Freeware
Functions: Checks for worldwide DNS changes.
Homepage
Platforms: win32, Linux
Commentary: Great for monitoring changes in DNS when you want to do it locally. Similar online tools like DNS Checker do the same.
Usage Example: dug run -q A -w 300000 iudb.net

Screenshot:

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