CIDRAn interactive IP address and CIDR range visualizer

CIDR is a notation for describing blocks of IP addresses and is used heavily in various networking configurations. IP addresses contain 4 octets, each consisting of 8 bits giving values between 0 and 255. The decimal value that comes after the slash is the number of bits consisting of the routing prefix. This in turn can be translated into a netmask, and also designates how many available addresses are in the block.

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    1. 0
    2. 0
    3. 0
    4. 0
    5. 1
    6. 0
    7. 1
    8. 0
    1. 0
    2. 1
    3. 0
    4. 1
    5. 1
    6. 0
    7. 0
    8. 0
    1. 1
    2. 0
    3. 0
    4. 0
    5. 0
    6. 1
    7. 1
    8. 1
    1. 1
    2. 0
    3. 0
    4. 1
    5. 0
    6. 0
    7. 0
    8. 0
255.255.255.240Netmask10.88.135.144CIDR Base IP10.88.135.159Broadcast IP16Count
10.88.135.145First Usable IP10.88.135.158Last Usable IP