About DNS Lookup
DNS is the internet's phonebook — turning domains into IPs, routing mail via MX, stashing verification in TXT. When troubleshooting resolution, validating config changes or debugging mail delivery, you need a tool that queries record types on demand. This tool queries A, AAAA, MX, TXT, NS, CNAME, SOA and CAA records via Google and Cloudflare DNS-over-HTTPS endpoints, showing name, type, TTL and data. Requests go directly to the DoH provider, not relayed through this site. Tip: Bookmark this tool for quick access during network troubleshooting. All queries are made directly from your browser — no command-line tools required.
Use Cases
- Resolution troubleshooting — Check A/AAAA records to confirm the domain points at the right IP and root-cause "site won't load".
- Mail config audit — Check MX and TXT (SPF/DKIM) to fix rejected or junked email.
- Migration validation — Compare old and new records and TTL after a DNS change to confirm global propagation.
- Certificate authorization — Check CAA to ensure only designated CAs may issue certs for the domain.
- Delegation mapping — Check NS and SOA to clarify subdomain delegation and zone master/slave.
- Verify CDN mapping — Resolve A/AAAA records to confirm the domain points to the expected CDN edge IPs after a provider switch.
- Detect domain takeover — Check CNAME records for dangling DNS that could lead to subdomain takeover by an unregistered target.
FAQ
Which provider handles the query?
You can switch between Google and Cloudflare; requests go directly to the DoH endpoint (dns.google or cloudflare-dns.com), not relayed by this site.
Why "No records found"?
The domain has no record of that type — possibly unconfigured or wrong type selected; try NS or SOA to confirm the domain exists.
What unit is TTL?
Seconds. It is how long the record may be cached; after a change, expect roughly one TTL for global propagation.
Can my queries leak?
DoH is HTTPS-encrypted so third parties can't easily snoop, but the DoH provider itself sees the request.
Can it do reverse (PTR) lookups?
This release focuses on forward records; PTR reverse lookups aren't provided — use dig -x on the command line.
Any browser compatibility requirements?
This tool works in all modern browsers (Chrome, Firefox, Edge, Safari). No plugins or extensions required.
Can I use it offline?
After initial load, most features work offline. The core logic runs entirely in your browser with no network dependency.