VoIP IP Telephony Question:

What is IP addresses range A,B,C,D,E?

Answer:

0.0.0.0 126.255.255.255--class-A
127.0.0.0 127.255.255.255--LoopBack IP address.
128.0.0.0 191.255.255.255--class-B
192.0.0.0 223.255.255.255--class-C
224.0.0.0 239.255.255.255--class-D
240.0.0.0 255.255.255.255--class-E

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