RDAP Registrar Referral Chains
Engineering patterns for multi-hop registry → registrar RDAP links.
RDAP referralregistrar
Overview
Engineering patterns for multi-hop registry → registrar RDAP links.
Key points
- Combine IANA bootstrap with local indexes for better coverage.
- Keep WHOIS port 43 fallback for RDAP-less TLDs.
- Respect registry rate limits; cache aggressively.
- Expose data source and partial flags in API output.
WHO.GA in practice
WHO.GA (Whoga) provides unified web and JSON API lookup for scenarios like "RDAP Registrar Referral Chains", handling bootstrap routing, registrar referrals, and WHOIS fallback. Try who.ga or api.who.ga/<query>.