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Network Systems Admin. (in Training)

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Submitted By Tofuboi
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Daniel Wang
NT 2640 IP Address Class
Historical Significance of the address classes:
Class A: the first of the address classes, which is responsible for the value ranges of IP from 0-126 and also has 16,177,214 hosts. It also has 256 networks and the most significant bits are 0000.
Class B: The second of the address classes, which is responsible for the value ranges of IP from 128-191. It also has 65,534 hosts and 65,536 networks. The most significant bits are 1000 and it is also a common class among most IP addresses.
Class C: the third of the address classes, which is responsible for the value ranges of IP from 192-223 the most significant bits are 1100. It only has 254 hosts but it also has 16,177,216 networks since a lot of people have their IP addresses starting with 192.xxx.xxx.xx.
Class D: the fourth of the address classes, which is responsible for the value ranges of IP from 224-239. Its most significant bits are 1110, and it does not have any networks or hosts because this class is rarely considered since the start of IP addresses don’t often start with 224 and above.
Class E: the fifth of the address classes, which is responsible for the value ranges of IP from 240 and above. The significant bits of this class are 1111 and just as Class D does not have any hosts or networks, the same is with this class since IP addresses do not go above 192 usually. http://www.inetdaemon.com/tutorials/internet/ip/addresses/classful.shtml Address space A: the value range is from 0-126 so that means that the IP addresses on the computers that have the same first number from this 0-126 category is one of the address spaces.
Address space B: the value range is from 128-191 so the IP addresses on the computers with a starting number within this range are in this address space.
Address space C: the value range is from 192-223. That means that the computers and

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