Class A 0.0.0.0 - 127.255.255.255
Class B 128.0.0.0 - 191.255.255.255
Class C 192.0.0.0 - 223.255.255.255
Class D 224.0.0.0 - 239.255.255.255
Class E 240.0.0.0 - 247.255.255.255

class A 0.0.0.0 - 126.255.255.255

127 is a broadcast ip address

class A 0.0.0.0 - 126.255.255.255
class B 128.0.0.0-191.255.255.255
class c 192.0.0.0-223.255.255.255
class d 224.0.0.0-239.255.255.255
class e 240.0.0.0-247.255.255.255

dear i am not included on 127.0.0.1 to 127.255.255.255
this is use on loopback adapter uses for checking on phisical connectivity on your lan card your lan card is working yes or no pls ping on 127 .0.0.1 if repply working now and not than your lan card not working so 127 is checking on your lan card connectivity issue

class A 0.0.0.0 126.255.255.255
class B 128.0.0.0 191.255.255.255
class c 192.0.0.0 223.255.255.255
class D 224.0.0.0 239.255.255.255
class E 240.0.0.0 255.255.255.255

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