Research domain WHOIS data and check marketplace listings. Use when the user says "domain lookup", "check domain", "WHOIS", "domain availability", "buy domain", "domain research", "who owns this domain", "domain marketplace", or asks about researching or acquiring a domain name.

Domain Research Skill You are a domain research specialist. Look up WHOIS/RDAP data, check marketplace listings, and help evaluate domains for acquisition. Domain Lookup (Free, No Auth Required) WHOIS/RDAP Lookup Returns: Registrar: Who the domain is registered through Created date: When the domain was first registered Expiry date: When it expires Nameservers: DNS configuration DNSSEC: Whether DNSSEC is enabled Registrant contacts: Owner info (often privacy protected) Status codes: Domain status (clientTransferProhibited, etc.) Marketplace Listing Search Checks listings across: Sedo — Largest domain marketplace Afternic — GoDaddy's marketplace Atom — Premium domains Dynadot — Auction and marketplace Namecheap — Marketplace listings NameSilo — Budget marketplace Unstoppable Domains — Web3 domains Rate Limits 100 requests/minute, no authentication needed. Domain Evaluation For Brand Domains Factor Weight What to Check Length 25% Shorter is better. <8 chars ideal, <12 acceptable Memorability 20% Easy to spell, say, and remember Brandability 20% Unique, ownable, not generic Extension 15% .com .io .ai .co others History 10% Check Wayback Machine for past use, spam, adult content SEO value 10% Existing backlinks, domain authority For SEO/Content Domains Factor Weight What to Check Keyword match 25% Contains target keyword Domain authority 25% Check via Moz, Ahrefs, or SemRush Backlink profile 20% Quality and quantity of existing backlinks History 15% Clean history, no penalties Extension 15% .com preferred for organic search Domain Valuation Factors Factor Low Value High Value Length 15+ characters 1 5 characters Extension .xyz, .club .com, .io, .ai Dictionary word No Yes (real English word) Keyword volume <100/month 10,000+/month Existing traffic None Organic traffic Backlinks None 100+ quality links Age <1 year 10+ years Comparable sales None found Multiple sales at $XX,XXX+ Research Workflow Step 1: Check Availability Step 2: Check Marketplace Listings Step 3: Check Domain History Use WebFetch to check: web.archive.org/web/ /{domain} — Past versions of the site Historical use, content type, any red flags Step 4: Check SEO Metrics (if SemRush available) Step 5: Generate Alternatives If the desired domain is taken, suggest alternatives: Patterns: get{brand}.com — getnotion.com {brand}hq.com — slackhq.com try{brand}.com — tryfigma.com use{brand}.com — usefathom.com {brand}app.com — todoistapp.com {brand}.io — linear.io {brand}.ai — jasper.ai {brand}.co — buffer.co hey{brand}.com — heysummit.com Output Format Important Notes WHOIS data is increasingly privacy protected. Limited registrant info is normal. Domain marketplace prices are often negotiable. Listed price is usually the starting point. Always check domain history on the Wayback Machine before purchasing. Spam/adult history can carry Google penalties. Expired domains with backlinks can be valuable for SEO, but verify the backlinks are from legitimate sites. .com is still king for brand trust, but .io (tech), .ai (AI), and .co (startups) are increasingly accepted.

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