Domain & DNS
Domain Availability
Check if a domain is available
WHOIS Lookup
Domain registration info
DNS Lookup
Query A, MX, TXT, NS
IP & Network
IP Geolocation
Location & ISP from an IP
Subnet Calculator
Calculate CIDR & range
Port Reference
Port & service info
Ping & Latency
Check server connection
Web & Security
SSL Checker
SSL certificate status
HTTP Headers
Inspect & redirect
Email Validator
Validate & MX record
HTTP Status Code
What each HTTP status code means
Encode, Hash & Password
Encode / Decode
Base64 & URL encode
Hash Generator
MD5, SHA-1, SHA-256
Password Generator
Strong & random passwords
Device Info
User Agent Parser
Browser & OS info
My Device Info
IP, browser, screen