whatmask (net/whatmask) Add to my watchlist

Easily convert between three common subnet mask notations

Notations supported: Name Example --------------------------------- CIDR /24 Netmask 255.255.255.0 Wilcard Bits 0.0.0.255 The above notations are all identical. CIDR notation commonly has a / in front of the number (representing the number of bits). Whatmask can accept these notations with or without a slash. Netmask notation is pretty much the standard old-school way of doing it. Wilcard bits are similar to the netmask, but they are the logical not of the netmask. This notation is used by a number of popular routers.

Version: 1.2 License: GPL-2+ GitHub
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2024-Oct-16 to 2024-Nov-15


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