WHOIS Lookup
Look up domain registration, DNS records, SSL certs, etc for any domain or IP
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CIDR Range Expander
Expand CIDR ranges, calculate subnets, check IP membership, compare networks, etc.
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IP Subnet Calculator
Easily work with subnets
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DNS Lookup Tool
Look-up DNS records online
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Email Header Analyzer
Paste and analyze email headers for SPF/DKIM/DMARC, security issues, etc.
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Email DNS Checker
Verify your domain's email authentication records in one lookup.
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Cipher Identifier & Decoder
Paste an encrpyted code, learn which cipher it uses, and decrypt it.
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Online Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512, SHA-3, CRC32, BLAKE2, and HMAC hashes.
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Base64 Encoder / Decoder
Encode and decode Base64 strings and files. Your data never leaves your device.
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URL Coder / Decoder
Encode and decode URLs, query strings, and special characters.
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JWT Decoder & Generator
Decode, inspect, verify, and generate JSON Web Tokens.
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CVSS Score Calculator
Calculate CVSS v3.1 and v4.0 vulnerability severity scores
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SSL Checker
SSL Checker
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SSL Toolkit
A dozen useful SSL tools
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HTTP Header Inspector
Analyze response headers, security, performance, redirects, etc.
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API Tester
Test API's here!
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CORS Tester
Check your API for CORS compatibility
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Google Dork Builder
Build advanced Google search queries.
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Password Generator
Generate safe and secure passwords
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2FA Authenticator
Two-Factor Authentication - Your secrets never leave your device
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