DNS Checker/Whois & IP Lookup

DNS Checker

+ Whois & IP Lookup

See every resolver's answer at once — your device's OS resolver plus a curated list of public DNS providers (Google, Cloudflare, Quad9, OpenDNS, AdGuard, Alibaba, CleanBrowsing, DNS.SB), fanned out in parallel. Identical answers collapse into one group; divergent ones stand out immediately, so you can tell at a glance whether your network's resolv.conf is steering you somewhere unexpected.

Spot DNS hijacking & poisoning Local OS vs. public resolvers, side by side.

Diagnose CDN & geo routing Compare what each resolver returns and its latency.

One query, every resolver

Type a hostname. The app dispatches an A-record query to your local resolver plus 15+ public DNS servers in parallel, groups the answers by IP set, and shows per-server latency so you can see who answered fastest — and who answered differently.

📍 Local (OS)
8.8.8.8
1.1.1.1
9.9.9.9
208.67.222.222
94.140.14.14
223.5.5.5
185.222.222.222

Multi-Resolver DNS Lookup

Parallel A-record queries against your OS resolver and a curated set of public DNS providers. Results are bucketed by the IP set returned, so consensus and divergence are both obvious at a glance.

Local vs. Public Diff

The 📍 Local row always shows first. If your device sees a different answer than the rest of the internet, you'll know — useful for catching captive portals, hijacked routers, or stale caches.

WHOIS Lookup

Switch to the WHOIS tab to pull registration data for any domain. Toggle strip subdomain to query the registrable root, or leave it off to see exactly what you typed.

What you actually get

ResolversOS resolver + Google, Cloudflare (incl. Malware / Family variants), Quad9, OpenDNS, AdGuard, Alibaba, CleanBrowsing, DNS.SB.
Grouped viewSame answer? Collapsed into one row. Different? They split out so anomalies surface fast.
Per-server latencyEach resolver's response time is shown alongside its answer — useful for picking a faster upstream.
WHOISRegistrar, dates, name servers, contacts — with an optional toggle to strip subdomains down to the apex.
Recent queriesTap a past lookup to re-run it on either tab.
Offline-friendlyNo account, no cloud backend — queries go directly from your device to the resolvers.