Class A Public Address, 1 - 126, Loopback Address, 127.0.0.0 - 127.255.255.255, Default Subnet mask for Class A, /8, Class A The highest order bit is, 0xxxxxx, Class B Public Address, 128 - 191, Default Subnet mask for Class B, /16, Class B: The highest order 2 bits are, 10xxxxxx, Class C Public Address, 192 - 223, Class C: The highest order 3 bits are, 110xxxxx, Default Subnet mask for Class C, /24, Class D Public Address, 224 - 239, Class D: The highest order 4 bits are, 1110xxxx, Class E Public Address, 240 - 255, Class E: The highest order 4 bits are, 1111xxxx, APIPA, 169.254.x.x, Loopback Address IPV6, ::1, Class A Private Address, 10.0.0.0 - 10.255.255.255, Class B Private Address, 172.16.0.0 - 172.31.255.255, Class C Private Address, 192.168.0.0 - 192.168.255.255

CCNA | IP Address Classes

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