IPNetwork Computes your netmask, cidr, subnet, supernet and network
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IPNetwork Tags

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IPNetwork Description

The IPNetwork application was developed to be a small command line utility which will take care of complex network, ip, netmask, subnet, cidr calculation. It works with IPv4, it is written in C# and has a light and clean API and is fully unit tested. Usage: ipnetwork networks ... Print options -i : network -n : network address -m : netmask -c : cidr -b : broadcast -f : first usable ip address -l : last usable ip address -u : number of usable ip addresses Parse options -d cidr : use cidr if not provided (default /32) -D : use default cidr (ClassA/8, ClassB/16, ClassC/24) Actions -h : help message -s cidr : split network into cidr subnets -w : supernet networks into smallest possible subnets -W : supernet networks into one single subnet -x : list all ipadresses in networks -C network : network contain networks -o network : network overlap networks networks : one or more network addresses (1.2.3.4 10.0.0.0/8 10.0.0.0/255.0.0.0 ...) Example 1 Display ipnetwork informations : c:\> ipnetwork 10.0.0.0/8 IPNetwork : 10.0.0.0/8 Network : 10.0.0.0 Netmask : 255.0.0.0 Cidr : 8 Broadcast : 10.255.255.255 FirstUsable : 10.0.0.1 LastUsable : 10.255.255.254 Usable : 16777214 Example 2 Split network into cidr c:\> ipnetwork -s 9 10.0.0.0/8 IPNetwork : 10.0.0.0/9 Network : 10.0.0.0 Netmask : 255.128.0.0 Cidr : 9 Broadcast : 10.127.255.255 FirstUsable : 10.0.0.1 LastUsable : 10.127.255.254 Usable : 8388606 -- IPNetwork : 10.128.0.0/9 Network : 10.128.0.0 Netmask : 255.128.0.0 Cidr : 9 Broadcast : 10.255.255.255 FirstUsable : 10.128.0.1 LastUsable : 10.255.255.254 Usable : 8388606 Example 3 supernet networks into smallest possible subnets C:\>ipnetwork -w 192.168.0.0/24 192.168.1.0/24 IPNetwork : 192.168.0.0/23 Network : 192.168.0.0 Netmask : 255.255.254.0 Cidr : 23 Broadcast : 192.168.1.255 FirstUsable : 192.168.0.1 LastUsable : 192.168.1.254 Usable : 510 Example 4 supernet networks into smallest possible subnets c:\> ipnetwork -w 192.168.0.0/24 192.168.2.0/24 IPNetwork : 192.168.0.0/24 Network : 192.168.0.0 Netmask : 255.255.255.0 Cidr : 24 Broadcast : 192.168.0.255 FirstUsable : 192.168.0.1 LastUsable : 192.168.0.254 Usable : 254 -- IPNetwork : 192.168.2.0/24 Network : 192.168.2.0 Netmask : 255.255.255.0 Cidr : 24 Broadcast : 192.168.2.255 FirstUsable : 192.168.2.1 LastUsable : 192.168.2.254 Usable : 254 Example 5 supernet networks into smallest possible subnets C:\>ipnetwork -W 192.168.0.0/24 192.168.129.0/24 IPNetwork : 192.168.0.0/16 Network : 192.168.0.0 Netmask : 255.255.0.0 Cidr : 16 Broadcast : 192.168.255.255 FirstUsable : 192.168.0.1 LastUsable : 192.168.255.254 Usable : 65534 Example 6 Split network into cidr, display full network only C:\>ipnetwork -i -s 12 10.0.0.0/8 | grep -v \-\- IPNetwork : 10.0.0.0/12 IPNetwork : 10.16.0.0/12 IPNetwork : 10.32.0.0/12 IPNetwork : 10.48.0.0/12 IPNetwork : 10.64.0.0/12 IPNetwork : 10.80.0.0/12 IPNetwork : 10.96.0.0/12 IPNetwork : 10.112.0.0/12 IPNetwork : 10.128.0.0/12 IPNetwork : 10.144.0.0/12 IPNetwork : 10.160.0.0/12 IPNetwork : 10.176.0.0/12 IPNetwork : 10.192.0.0/12 IPNetwork : 10.208.0.0/12 IPNetwork : 10.224.0.0/12 IPNetwork : 10.240.0.0/12 Example 7 Test if an ip is contained in a network C:\>ipnetwork -C 10.0.0.1 10.0.0.0/8 10.0.1.0/24 10.0.0.1/32 contains 10.0.0.0/8 : False 10.0.0.1/32 contains 10.0.1.0/24 : False Example 8 Test if a network overlap another network C:\>ipnetwork -o 10.0.0.1/24 10.0.0.0/8 10.0.1.0/24 10.0.0.0/24 overlaps 10.0.0.0/8 : True 10.0.0.0/24 overlaps 10.0.1.0/24 : False Example 9 remove one ip from a class and regroup them into the smallest possible network C:\> ipnetwork -i -s 32 192.168.0.0/24 \ | grep -v \-\- \ | awk "{print $3;}" \ | grep -v 192.168.0.213/32 | xargs ipnetwork -i -w \ | grep -v \-\- IPNetwork : 192.168.0.224/27 IPNetwork : 192.168.0.216/29 IPNetwork : 192.168.0.214/31 IPNetwork : 192.168.0.212/32 IPNetwork : 192.168.0.208/30 IPNetwork : 192.168.0.192/28 IPNetwork : 192.168.0.128/26 IPNetwork : 192.168.0.0/25

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