Summary
Registration lookups split by identifier type, with nothing else in the way.
Splitting by record type means the answer takes one call whether you are holding a hostname, an address, a TLD or an ASN — no mode parameter to get wrong. What comes back is the whois server's own output, so anything structured you want from it is yours to parse.
What it is
A whois client with four lookups, one per record type: domain, TLD, IP address and ASN.
What you get
- whois_domain returns the registration record behind a domain name
- whois_tld returns the record for a top-level domain
- whois_ip returns the record covering an IP address
- whois_as returns the record for an autonomous system number
Requirements
Outbound network access from the machine running it to the whois servers being queried. There is nothing to register for and no key to hold.
Setup effort
One command — npx -y @mcp-server/whois-mcp@latest