DNS Records vs WHOIS Data
When to query DNS vs RDAP—resolution vs registration.
DNSWHOIS
Overview
When to query DNS vs RDAP—resolution vs registration.
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 "DNS Records vs WHOIS Data", handling bootstrap routing, registrar referrals, and WHOIS fallback. Try who.ga or api.who.ga/<query>.