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CLI
Free · 20+ Tools

dnsfyiBETA

Everything about your domain, one screen.
Quick analysis, security scan, DNSBL, email header & more.

DNS Lookup

A, AAAA, MX, NS, TXT, SOA and more

SSL Check

Certificate expiry, chain, SAN, encryption

Email Security

SPF, DKIM, DMARC, BIMI, MTA-STS

DNS Propagation

Check propagation across 23 global DNS servers

Blacklist

12 DNSBL spam & blacklist check

Port Scan

Quick security scan of 21 critical ports

Home

Web Security Scan

SSL certificate, HTTP headers, security header score, port scan

Home

WHOIS Information

Domain registration and ownership details

Port Scan

Detect open ports on a domain or IP address

Leave ports empty to scan 21 common ports. Leave target empty to use domain from search bar.

Reverse IP Lookup

Find websites hosted on an IP address or domain

DNS Propagation

Propagation check across global DNS resolvers

Blacklist Check

Domain check against major DNSBL blacklists

Ping

Measure server latency by sending ICMP packets


    

Traceroute

Trace routing paths and node hops to the target server


    

Email Header Analysis v2

Advanced email security analysis — phishing detection, security score, detailed timeline

Examples:

Email Health

MX, SPF, DKIM, DMARC, Port 25 and PTR status

Port Scan

Find open ports and services

Reverse IP

Find all domains on an IP

DNS Propagation

Verify DNS propagation worldwide

Blacklist Check

Check 30 DNSBLs

Ping

Server ICMP connection test

Traceroute

Track network hops in detail

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