
IP Addresses
32 bits ≈ 4 billion (world population: 6.5 billion)
First n bits indicate network (n = 8, 16, 24)
For example, columbia.edu
owns 128.59.0.0 – 128.59.255.255
Magical addresses:
127.0.0.1 “Me”
192.168.x.x Never assigned worldwide
10.x.x.x Never assigned worldwide
255.255.255.255 Broadcast
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