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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

What is your IP? Whois?
IP: 54.156.82.247 more
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Request header
Size: 257 bytes more
Server date / time
November 20, 2017, 12:02 PM
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