🛠️ Network & DNS Tools
MX Lookup
Find mail servers for a domain and their priorities
SOA Record
View Start of Authority record for a domain
SRV Lookup
Discover service records (SIP, XMPP, IMAP, etc.)
CAA Lookup
Check Certificate Authority Authorization records
Reverse DNS (PTR)
Look up hostname from an IP address
DNS Propagation
Check DNS across Google, Cloudflare, OpenDNS, Quad9 & more
SPF Record Check
Validate SPF records and sender policy
DMARC Lookup
Check DMARC policy and reporting configuration
DKIM Lookup
Find DKIM signing records (tries common selectors)
SMTP Banner
Connect to mail server and retrieve SMTP banner
Blacklist Check
Check IP or domain against 15 major DNS blacklists
HTTP Headers
Retrieve HTTP response headers and security analysis
TCP Port Check
Test if a specific port is open on a host
DNS Trace
Trace DNS resolution path to destination
Subnet Calculator
Calculate network ranges, masks, and host counts
SSL Certificate
Inspect TLS certificate, expiry, issuer & cipher
Domain Health
Aggregated health score: DNS, MX, SPF, DMARC, SSL