DEV-TOOLSApril 11, 20261 min read6 views

Quien – A better WHOIS lookup tool

Quien is a modern command-line tool for domain and IP lookups featuring an interactive TUI. It goes beyond traditional WHOIS by supporting DNS analysis, SSL/TLS details, and tech stack detection.

A better WHOIS lookup tool. Interactive TUI with tabbed views for WHOIS, DNS, mail, SSL/TLS, HTTP headers, and tech stack detection.

brew tap retlehs/tap
brew install retlehs/tap/quien

Or with Go:

go install github.com/retlehs/quien@latest

# Interactive prompt
quien
# Domain lookup (interactive TUI)
quien example.com
# IP address lookup
quien 8.8.8.8
# JSON output
quien --json example.com

RDAP-first lookupswith WHOIS fallback for broad TLD coverageIANA referralfor automatic WHOIS server discoveryTech stack detectionincluding WordPress plugins, JS/CSS frameworks, and external services parsed from HTMLIP lookupswith reverse DNS, network info, and abuse contacts via RDAPAutomatic retrywith exponential backoff on all lookupsJSON subcommandsfor scripting:quien dns

,quien mail

,quien tls

,quien http

,quien stack

,quien all

Tip:If you wantquien

to replace your default WHOIS tool, you can add an alias to your shell config:alias whois=quien

Add quien as a agent skill so agents use it for domain and IP lookups:

npx skills add retlehs/quien

Source: Hacker News

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