Quien Whois Lookup

This replaces the old whois command with a modern Go tool that gives you tabbed TUI views and JSON output for domain registration, DNS records, mail config (SPF, DMARC, DKIM), SSL certificates, HTTP headers, tech stack detection, and IP/ASN lookups. It uses RDAP first before falling back to WHOIS, so you get cleaner data for most TLDs. The JSON subcommands (quien dns, quien mail, quien tls) make it easy to script audits or pipe into jq for batch domain checks. Good for security reviews, debugging mail delivery, or just replacing your muscle memory whois alias with something that actually shows you everything in one place.

skills.sh installs: 395
GitHub stars: 26
last updated: Jun 3, 2026

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Install

$ npx -y skills add aradotso/trending-skills --skill quien-whois-lookup --agent claude-code

Installs into .claude/skills of the current project.

Files

quien — Better WHOIS Lookup Tool

Skill by ara.so — Daily 2026 Skills collection.

quien is a Go-based CLI/TUI tool that replaces whois with tabbed interactive views and JSON-scriptable subcommands for domain WHOIS/RDAP, DNS records, mail configuration (SPF, DMARC, DKIM, BIMI), SSL/TLS, HTTP headers, tech stack detection, and IP/ASN/BGP lookups.

Installation

Homebrew (macOS/Linux)

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

Ubuntu / Debian

curl -fsSL https://apt.quien.dev/install.sh | sudo sh

go install github.com/retlehs/quien@latest

Verify installation

quien --version

Optional — replace system whois:

# Add to ~/.bashrc or ~/.zshrc
alias whois=quien

Core CLI Commands

Interactive TUI (default)

# Launch interactive prompt
quien

# Open TUI directly for a domain
quien example.com

# Open TUI for an IP address
quien 8.8.8.8

JSON output (scriptable)

# Full JSON output for all tabs
quien --json example.com

SKILL.md on GitHub

Details

Repository: github.com/aradotso/trending-skills
First seen: Jun 3, 2026