dnsmonitor

Install command: 
brew install --cask dnsmonitor

Name: dnsmonitor

Monitor DNS activity

https://github.com/objective-see/DNSMonitor/

Cask JSON API: /api/cask/dnsmonitor.json

Cask code: dnsmonitor.rb on GitHub

Current version: 1.3.0

Current version requires: macOS >= 10.15

Analytics:

Installs (30 days)
dnsmonitor 24
Installs (90 days)
dnsmonitor 61
Installs (365 days)
dnsmonitor 277
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