Free DNS & Network Tools
Instant diagnostics for DNS, mail delivery, and uptime. No signup required.
Domain Health Check
Complete DNS, SSL, mail, security headers, SEO & performance audit — all in one scan
Run Check
DNS Lookup
Query full DNS records
A Record
Resolve IP + check server
MX Records
Test mail servers live
Email Health
Full email deliverability test
SPF Check
Validate sender policy
DKIM Check
Verify DomainKeys
DMARC Check
Verify DMARC policy
TXT Record
Read generic text records
Nameservers
Check NS health & delegation
Reverse DNS
Resolve IP to hostname
Is It Down?
Check website availability
SSL Check
Verify certificate validity
Mail TLS
Check mail server encryption
Find DNS Provider
Identify who manages your DNS
Blacklist Check
Check IP/domain spam reputation