Network & Security Tools
A collection of free, easy-to-use web tools for network diagnostics, security testing, and internet troubleshooting.
IP Whois Lookup
Discover ownership, location, and ISP details of any IP address.
DNS Lookup
Look up DNS records (A, AAAA, CNAME, MX, TXT) for any domain.
Proxy Check
Detect if an IP address is using a known proxy or VPN service.
Reverse DNS Lookup
Convert an IP address back to its associated domain name.
IP Blacklist Check
Check if an IP is on any known spam or security threat blacklist.
Email Header Analyzer
Parse email headers to reveal sender information and routing data.
Hostname Lookup
Convert an IP address to its associated hostname (FQDN).
Data Breach Check
Check if your email was exposed in known data breaches.
Password Strength Test
Analyze how strong your password is based on complexity and patterns.
Password Generator
Create strong, random passwords with customizable options.
Server Headers Check
Inspect HTTP headers returned by any domain's webserver.
Subnet Calculator
Calculate network range, broadcast address, and more from IP and subnet.
CIDR Calculator
Convert between CIDR notation and IP address ranges.
File Size Converter
Convert between bytes, KB, MB, GB and other file size units.
PIN Generator
Generate secure, random numeric PINs of customizable length.
MX Lookup
Look up mail exchange (MX) records for any domain.
SPF Checker
Validate SPF DNS records for email spoofing protection.
Jitter Test
Measure network jitter and latency between client and server.
Random IP Generator
Generate random IPv4 or IPv6 addresses for testing purposes.
Number System Converter
Convert numbers between binary, decimal, hex, and octal systems.
ASN Lookup
Look up Autonomous System Number details and IP blocks.