DNS Lookup
Look up DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME and SOA — directly from your browser using secure DNS-over-HTTPS. Useful for debugging email, verifying domains, and inspecting DNS configuration.
About the DNS Lookup
The Domain Name System (DNS) is the internet’s address book, translating human-friendly domain names into the records that route traffic and email. A records point to IPv4 addresses, MX records define mail servers, and TXT records hold verification and policy data like SPF and DKIM.
When email bounces or a domain misbehaves, checking its DNS records is the first diagnostic step. This tool queries public resolvers over DNS-over-HTTPS, so it works entirely from the browser without a backend — though deeper checks like live SMTP or port testing require server-side tools.
How to use it
- 1Enter a domain name such as example.com.
- 2Choose the record type you want to inspect (A, MX, TXT, …).
- 3Read the records returned by the resolver and copy what you need.
Features
- Query A, AAAA, MX, TXT, NS, CNAME and SOA records
- Uses encrypted DNS-over-HTTPS (Cloudflare & Google resolvers)
- Readable, copyable results with TTLs
- No installs and no command line — just a domain
Frequently asked questions
How does a browser-based DNS lookup work?
It uses DNS-over-HTTPS (DoH), a standard that lets the browser query public resolvers such as Cloudflare and Google over an encrypted HTTPS connection — no command line or backend needed.
Which record types can I look up?
A, AAAA, MX, TXT, NS, CNAME and SOA — the records you need for websites, email, and domain verification.
Why would I check MX or TXT records?
MX records show which servers receive a domain’s email; TXT records hold SPF, DKIM, and verification strings. Both are essential for debugging email delivery.
Can it test SMTP or open ports?
No. Live mail-server and port testing require a backend connection that browsers cannot make. This tool focuses on DNS record lookups.