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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