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Free online network tools & utilities

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Subnet Calc · compute network subnet (dotted decimal or CIDR notation) mask for IP address or range, or vice versa. Determine number of hosts, broadcast address and host class.


8.8.8.8 or 192.0.34.164


Select 255.255.255.0 · /24 or 255.0.0.0 · /8

Random examples…

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Automation Workshop Free Edition
Your IP?
IP: 3.92.28.52 more
Local IP: .
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Request header
Size: 301 bytes more
Your quotes
EXE · Pretty good!
—Anonymous
Performance
Done in 0.0025 seconds
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