Free DNS Lookup & Domain Analysis Tools
Look up DNS records, check email security, and inspect domain registration data — all from your browser.
DNS & Domain Tools
MX Lookup
Mail servers & email delivery
NS Lookup
DNS hosting & delegation
A Record Lookup
IPv4 addresses
TXT Record Lookup
SPF, verification & more
SPF Record Checker
Email sender authorization
DMARC Checker
Email authentication policy
WHOIS Lookup
Registration & ownership info
IP Lookup
IPv4 & IPv6 addresses
RDAP Lookup
Full registration data via RDAP
Propagation Check
Compare DNS across providers
Reverse DNS
PTR record lookup
Subdomain Discovery
CT log subdomain scanner
DNS Lookup
Complete DNS record lookup
Email Security Checker
Full email security analysis