DNS Lookup (Multi-Resolver)
Query A, AAAA, MX, TXT, NS records against Cloudflare, Google, and Quad9 simultaneously. Spot poisoning and stale cache.
Why query multiple resolvers?
Different DNS resolvers can return different results — or the same domain might be served by a different IP based on where the query comes from (CDN routing, geo-DNS, anycast). This tool queries three public resolvers in parallel and shows what each returned.
The resolvers tested
- Cloudflare 1.1.1.1 — fast, privacy-focused, default for many networks.
- Google 8.8.8.8 — oldest public resolver, very widely used.
- Quad9 9.9.9.9 — adds malware/phishing blocking by default.
If results differ, it's usually a sign of: a CDN with geo-routing, DNS poisoning, recent changes still propagating, or one resolver caching stale data.
How this tool works
All queries use DNS-over-HTTPS (DoH) from your browser to the resolver. Your local DNS settings (router, ISP) are bypassed entirely. The query and response stay between you and the resolver — but Cloudflare, Google, and Quad9 obviously see what you queried.