nettools.me

DNS Lookup Reverse DNS WHOIS DNS Propagation DNSSEC Validator Subdomain Finder

SSL Certificate TLS Scanner Security Headers Email Security Blacklist Check CORS Tester Password Generator

Ping Traceroute Port Scanner IP Geolocation ASN Lookup Reverse IP MAC Lookup Subnet Calculator IP Converter

HTTP Headers HTTP/2 & HTTP/3 Redirect Chain Speed Test Uptime Check Robots.txt Analyzer Open Graph Preview User Agent Parser Compression Test cURL Builder

JWT Decoder Hash Generator Base64 URL Encoder JSON Formatter UUID Generator Timestamp Regex Tester Cron Parser IPv6 Tools MCP Tester

DNS & Domain

DNS Lookup Reverse DNS WHOIS DNS Propagation DNSSEC Validator Subdomains

Security

SSL Certificate TLS Scanner Security Headers Email Security Blacklist Check CORS Tester Password Generator

Network

Ping Traceroute Port Scanner IP Geolocation ASN Lookup Reverse IP MAC Lookup Subnet Calc IP Converter

Web

HTTP Headers HTTP/2 & HTTP/3 Redirect Chain Speed Test Uptime Check Robots.txt Open Graph User Agent Compression cURL Builder

Utilities

JWT Decoder Hash Generator Base64 URL Encoder JSON Formatter UUID Generator Timestamp Regex Tester Cron Parser IPv6 Tools MCP Tester

Subdomain Finder

Discover a domain's subdomains — no scanning or brute-forcing required. Useful for mapping an organization's services and attack surface.

Enter a domain to discover its known subdomains.

Searching for subdomains, please wait...

CLI Usage

curl nettools.me/subdomains?q=example.com

DNS Lookup Reverse DNS WHOIS DNS Propagation DNSSEC Validator Subdomains

SSL Certificate TLS Scanner Security Headers Email Security Blacklist Check CORS Tester Password Gen

Ping Traceroute Port Scanner IP Geolocation ASN Lookup Reverse IP MAC Lookup Subnet Calc IP Converter

HTTP Headers HTTP/2 & HTTP/3 Redirect Chain Speed Test Uptime Check Robots.txt Open Graph User Agent Compression cURL Builder

JWT Decoder Hash Generator Base64 URL Encoder JSON Formatter UUID Generator Timestamp Regex Tester Cron Parser IPv6 Tools

MCP Server MCP Tester API Docs Feedback

nettools.me — Free network tools for developers and sysadmins.

Try: curl nettools.me/ip · MCP Server · API Docs