Classes of IP addresses
< Internet Protocol
| Table of contents |
|
2 Class B 3 Class C 4 Class D 5 Class E 6 Special Addresses |
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Class A
First Octet Range: 0-127Class B
First Octet Range: 128-191Class C
First Octet Range: 192-223Class D
Class D addresses are multicast addresses.Class E
Class E addresses are reserved for experimental use.Special Addresses
Some addresses are reserved for special uses.
| address | purpose | class | # of addresses |
|---|---|---|---|
| 127.0.0.0 - 127.255.255.255 | localhost | A | 16,777,216 |
| 10.0.0.0 - 10.255.255.255 | intranet | A | 16,777,216 |
| 172.16.0.0 - 172.31.255.255 | intranet | B | 1,048,576 |
| 192.168.0.0 - 192.168.255.255 | intranet | C | 65,536 |
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