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Domains and DNS: tools for AI agents

Look up domains, DNS records and WHOIS details. The best matches among the MCP servers, command-line tools, web APIs and Claude Code plugins AptLynx checks every night, working ones first.

MCP servers

• WhoisLookup Needs a sign-in or key
  Domain WHOIS, DNS records, SSL certificates, and availability checks.
• Papacasper Toolbelt: whois_lookup Verified publisher · Working at last check
  Look up a domain's WHOIS registration record: registrar, creation and expiry dates, days remaining, name servers, and domain statuses, direct from the TLD…
• Botoi: lookup_domain_availability Working at last check
  Check if a domain name is available for registration. Use when brainstorming project names or validating domain ideas. Returns availability status and WHOIS…
• Presend: whois_lookup Working at last check
  Domain registration data via RDAP (the modern WHOIS): registrar, creation and expiration dates, domain age in days, nameservers. For DNS records, use…
• Dechonet: whois_lookup Verified publisher · Working at last check
  Retrieve domain registration data via RDAP (with WHOIS fallback): registrar, creation/expiry/update dates, nameservers, and EPP status flags, highlighting…
• Wwhois Whois: whois_lookup Verified publisher · Working at last check
  Look up WHOIS/RDAP data for a domain: registration state (registered / available / reserved / unsupported / unknown) and the full raw registry record…
• Intodns Scanner: whois_lookup Verified publisher · Working at last check
  Read-only WHOIS/RDAP lookup for a domain or IP address. For domains it returns registrar, EPP domain-status codes, nameservers,…
• Hivex Names: whois_lookup Verified publisher · Working at last check
  Look up the registration record of any domain, live from its registry's RDAP (the successor of WHOIS): whether it is registered, the registrar, creation and…
• Whois: whois_lookup Working at last check
  Query WHOIS/RDAP information for a domain name, IP address or CIDR prefix (v4 or v6), or ASN
• Agentbits: tld_lookup Working at last check
  Identify what a DNS top-level domain such as com, io, or ai is classified as and commonly used for when classifying domains or answering TLD questions. Use…
• Web Search Data Api: domain_info Verified publisher · Working at last check
  Domain WHOIS and DNS lookup. Registrar, creation and expiry dates, nameservers, and full DNS records (A, AAAA, MX, NS, TXT, CNAME) for a domain. [$0.02/call].…
• WhoisJSON Runs on your computer
  WHOIS, DNS, SSL, and domain availability lookups for AI assistants
• Domain Intelligence: whois_lookup Verified publisher · Working at last check
  Registration data for a domain: registrar, created, updated and expiry dates, nameservers and status. RDAP first (rdap.org, IANA bootstrap, 22 fallback…

Command-line tools

• whois
  Lookup tool for domain names and other internet resources whois
• domain-check
  CLI tool for checking domain availability using RDAP and WHOIS protocols
• quien
  Better WHOIS and domain intelligence toolkit
• knot
  High-performance authoritative-only DNS server
• drill
  HTTP load testing application written in Rust
• ldns
  DNS library written in C

Web APIs

• IP2WHOIS Domain Lookup
  IP2WHOIS is a free tool to allow you to check WHOIS information for a particular domain, such as domain assigned owner contact information, registrar…
• Amazon Route 53 Resolver
  When you create a VPC using Amazon VPC, you automatically get DNS resolution within the VPC from Route 53 Resolver. By default, Resolver answers DNS queries…
• Bulk WHOIS API
  Domain API (WHOIS, Check, Batch) developer_tools
• Amazon Route 53
  Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service. You can use Route 53 to: Register domain names. For more information,…
• ACME DNS API
  Google Domains ACME DNS API that allows users to complete ACME DNS-01 challenges for a domain. analytics media
• AWS Cloud Map
  Cloud Map With Cloud Map, you can configure public DNS, private DNS, or HTTP namespaces that your microservice applications run in. When an instance becomes…

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Listing text is written by each tool's maker; AptLynx lists tools and does not vouch for them.