Free DNS, SSL & Network Tools
Fast, secure, and privacy-friendly tools for DNS lookups, email deliverability, SSL certificates, and network diagnostics.
DNS & Domain Tools
DNS Lookup
Query A, AAAA, MX, TXT, NS, CNAME, and SOA records for any domain.
WHOIS Lookup
Domain registration info: registrar, dates, nameservers, and status.
SSL Checker
Certificate details: issuer, validity, chain, and expiry countdown.
DNS Propagation
Check DNS records from multiple global resolvers simultaneously.
What Is My IP
Your IP address, location, ISP, and VPN/Tor detection.
Email Deliverability
MX Lookup
Mail server records with priority and resolved IP addresses.
SPF Checker
Validate SPF record syntax, parse mechanisms, and count DNS lookups.
DKIM Checker
Validate DKIM record for a given selector, check key type and length.
DMARC Checker
Validate DMARC policy, parse tags including p, sp, rua, ruf, and pct.
SMTP Test
Connect to mail server, test EHLO, check STARTTLS, measure response time.
Email Header Analyzer
Parse raw email headers, visualize hops, and show delays between servers.
Blacklist Check
Check if an IP or domain is listed on spam blacklists (DNSBL).
Email Deliverability Test
Combined score: SPF, DKIM, DMARC, blacklist, and MX validation.
Network Tools
Reverse DNS
IP to hostname via PTR record lookup.
Domain Expiry
Days until domain registration expires.
HTTP Headers
Security headers analysis with letter grade from A to F.
Ping Test
Response time measurement from multiple edge locations.
Traceroute
Network path visualization with multi-region timing.
NS Lookup
Nameserver details: hostname, IP, response time, and health check.
TXT Record Lookup
All TXT records for a domain including SPF and site verification.
DNSSEC Checker
DNSSEC validation status and chain of trust.
Port Checker
Test if a specific TCP port is open on a host.
Redirect Checker
Follow HTTP redirect chain and show each hop with status code.
Website Speed Test
Response time from multiple edge locations with TTFB measurement.
Certificate Transparency
Find all SSL certificates ever issued for a domain.