SubnetOnline.com - IPv4 Address Calculator

More Subnet Calculators

Latest news

10-2008 - AAAA support for DIG tool...
Try our DIG utility.

07-2008 - New IPv6 Subnet Calculator...
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06-2008 - Mobile version of network tools in beta...
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06-2008 - First set of IPv6 network tools introduced...
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06-2008 - Port Scanner tool to check port status...
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IPv4 Address Calculator

One of the more simple calculators in our list, but dan't de deceived by its simple look, because a list of results are shown, like Class and CIDR notation, by just giving an IP address and Subnet Mask.

Host/network address:
Network mask: