Free online tools - network, security, and diagnostics
Measure your internet connection speed
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Your IP address and location data
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Your IP Address
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Country
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Internet Provider (ISP)
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Check if a port is open on an IP
Create strong and secure passwords
Find the sender's IP address from email headers
IP addresses will appear here...
* In Gmail: Open email → 3 dots → "Show original"
Check DNS records for a domain
Check URL security status
Calculate subnet information
Check if an email address is valid
Get information about a MAC address
Check SSL certificate status
Check your password strength
Detailed domain information
Domain information will appear here...