Classes of IP Addresses

· April 21, 2021 · Cisco, Study Guide · , , , , · No Comments

List of Classes of IP Addresses

ClassRange of Network AddressesMaskMask Bits
A0.0.0.0 – 127.0.0.0255.0.0.08
B128.0.0.0 – 191.255.0.0255.255.0.016
C192.0.0.0 – 223.255.255.0255.255.255.024
D224.0.0.1 – 239.255.255.255255.255.255.25532
E240.0.0.1 – 255.255.255.255255.255.255.25532

Unregistered Addresses

ClassNetworkMaskComment
Class A10.0.0.0255.0.0.0One Large Class A Network
Class B172.16.0.0 Through 172.31.0.0255.255.0.016 Class B Networks
Class C192.168.0.0 Through 192.168.255.0255.255.255.0256 Class C Networks

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