ip-address - さまざまな IP アドレス範囲

Question

クラスA、B、C、およびDアドレス指定以外に存在するIPアドレス範囲のさまざまな分類は何ですか. たとえば、範囲 212.198.0.255-202.190.0.255 は具体的に何を意味しますか?

Answer 1

There ranges are

Class   Leftmost bits   Start address   Finish address
A              0xxx     0.0.0.0     127.255.255.255
B              10xx     128.0.0.0   191.255.255.255
C              110x     192.0.0.0   223.255.255.255

D & E classes are also present but D class is only Reserved for Multicasting and E class is for Experimental; used for research

Class   Leftmost bits   Start address   Finish address

D              1110     224.0.0.0   239.255.255.255
E              1111     240.0.0.0   255.255.255.255

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