0.0
Class C??”110NNNNN.NNNNNNNN.NNNNNNNN.HHHHHHHH
First three octets represent the network address, and the remaining octet represents the host
address.
First three high-order bits are set to 1, 1, and 0, respectively.
21 network bits.
8 host bits.
First byte range: 192??“223.
2,097,152 Class C ranges exist.
254 hosts are on each Class C.
Example: Host 192.15.1.1 on network 192.15.1.0
Class D??”1110MMMM.MMMMMMMM.MMMMMMMM.MMMMMMMM
Mainly reserved as multicast addresses.
First four high-order bits are set to 1, 1, 1, and 0, respectively.
28 multicast address bits.
First byte range: 224??“247 (first octet of a Class D address has a minimum value of 224 and a
maximum value of 239).
Class D range is used for multicast addresses??”see RFC 1112.
Example: 225.1.100.100
Class E??”1111RRRR.RRRRRRRR.RRRRRRRR.RRRRRRRR
Mainly reserved for experimental and future use.
First four high bits are set to 1, 1, 1, and 1, respectively.
28 reserved address bits.
First byte range: 248??“255 (first octet of a Class E address starts with 240).
In addition to being used for experimentation, Class E addresses are reserved for future use.
Note
N denotes the network ID bits.
H denotes the host ID bits.
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