whois-lookup

Perform WHOIS lookups for domains or IP addresses and parse registration details.

21|1|Updated Apr 12, 2026
One-click install
npx skills add https://github.com/woohyun212/security-skill --skill whois-lookup
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: whois-lookup
Source: https://github.com/woohyun212/security-skill/tree/main/whois-lookup
Command: npx skills add https://github.com/woohyun212/security-skill --skill whois-lookup

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Manually gathering registration and network details for a domain or IP is time‑consuming and error‑prone, hindering quick security assessments.

Core Features & Use Cases

  • Automated WHOIS query: Executes the whois command for any target.
  • Parsing key fields: Extracts registrar, creation and expiry dates, name servers for domains, or net range, ASN and organization for IPs.
  • Integration: Results can be chained to port scanning or threat modeling workflows.

Quick Start

Ask the whois-lookup skill to retrieve registration details for example.com.

Frequently Asked Questions about whois-lookup

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I perform a WHOIS lookup for a domain or IP address?

WHOIS lookup extracts key fields like registrar, creation and expiry dates, and name servers for domains. For IPs, it retrieves net range, ASN, and organization details to support security reconnaissance and asset profiling.

Do I need the whois command installed to retrieve domain registration details?

You must set the SECSKILL_TARGET environment variable to the target identifier before running the skill. This variable passes the specific domain or IP address to the whois command for querying registration data.

Can I integrate WHOIS data with port scanning or threat modeling workflows?

WHOIS lookup provides registration dates, name servers, and ASN details that help identify network ranges and ownership. This information is essential for mapping attack surfaces and conducting thorough security reconnaissance.

What network information does a WHOIS query return for an IP address?

A WHOIS query for an IP address returns the net range, ASN, and organization details. This network information helps identify the hosting provider and infrastructure ownership for security profiling.