| Address Class | Network ID | Default SN Mask | # Networks | # Hosts |
| Class A | 1-126.0.0.0 (0) | 255.0.0.0 | 126 | 16,777,214 |
| Class B | 128-191.0.0.0 (10) | 255.255.0.0 | 16,384 | 65,534 |
| Class C | 192-223.0.0.0 (110) | 255.255.255.0 | 2,097,152 | 254 |
Class A Loopback Address: 127.0.0.0
Private IP Addresses
Class A 10.0.0.1 – 10.255.255.254
Class B 172.16.0.1 – 172.31.255.254
Class C 192.168.0.1 – 192.168.255.254
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