Table 3 - Subnet Masks for a Class C Network
| Netmask ( Bits )
| Netmask ( Dotted Decimal )
| Netmask ( Hexadecimal )
| Netmask ( Binary )
|
| 0 | 0.0.0.0 | 0x00000000 | 00000000 00000000 00000000 00000000
|
| 1 | 128.0.0.0 | 0x80000000 | 10000000 00000000 00000000 00000000
|
| 2 | 192.0.0.0 | 0xc0000000 | 11000000 00000000 00000000 00000000
|
| 3 | 224.0.0.0 | 0xe0000000 | 11100000 00000000 00000000 00000000
|
| 4 | 240.0.0.0 | 0xf0000000 | 11110000 00000000 00000000 00000000
|
| 5 | 248.0.0.0 | 0xf8000000 | 11111000 00000000 00000000 00000000
|
| 6 | 252.0.0.0 | 0xfc000000 | 11111100 00000000 00000000 00000000
|
| 7 | 254.0.0.0 | 0xfe000000 | 11111110 00000000 00000000 00000000
|
| 8 | 255.0.0.0 | 0xff000000 | 11111111 00000000 00000000 00000000
|
| 9 | 255.128.0.0 | 0xff800000 | 11111111 10000000 00000000 00000000
|
| 10 | 255.192.0.0 | 0xffc00000 | 11111111 11000000 00000000 00000000
|
| 11 | 255.224.0.0 | 0xffe00000 | 11111111 11100000 00000000 00000000
|
| 12 | 255.240.0.0 | 0xfff00000 | 11111111 11110000 00000000 00000000
|
| 13 | 255.248.0.0 | 0xfff80000 | 11111111 11111000 00000000 00000000
|
| 14 | 255.252.0.0 | 0xfffc0000 | 11111111 11111100 00000000 00000000
|
| 15 | 255.254.0.0 | 0xfffe0000 | 11111111 11111110 00000000 00000000
|
| 16 | 255.255.0.0 | 0xffff0000 | 11111111 11111111 00000000 00000000
|
| 17 | 255.255.128.0 | 0xffff8000 | 11111111 11111111 10000000 00000000
|
| 18 | 255.255.192.0 | 0xffffc000 | 11111111 11111111 11000000 00000000
|
| 19 | 255.255.224.0 | 0xffffe000 | 11111111 11111111 11100000 00000000
|
| 20 | 255.255.240.0 | 0xfffff000 | 11111111 11111111 11110000 00000000
|
| 21 | 255.255.248.0 | 0xfffff800 | 11111111 11111111 11111000 00000000
|
| 22 | 255.255.252.0 | 0xfffffc00 | 11111111 11111111 11111100 00000000
|
| 23 | 255.255.254.0 | 0xfffffe00 | 11111111 11111111 11111110 00000000
|
| 24 | 255.255.255.0 | 0xffffff00 | 11111111 11111111 11111111 00000000
|
| 25 | 255.255.255.128 | 0xffffff80 | 11111111 11111111 11111111 10000000
|
| 26 | 255.255.255.192 | 0xffffffc0 | 11111111 11111111 11111111 11000000
|
| 27 | 255.255.255.224 | 0xffffffe0 | 11111111 11111111 11111111 11100000
|
| 28 | 255.255.255.240 | 0xfffffff0 | 11111111 11111111 11111111 11110000
|
| 29 | 255.255.255.248 | 0xfffffff8 | 11111111 11111111 11111111 11111000
|
| 30 | 255.255.255.252 | 0xfffffffc | 11111111 11111111 11111111 11111100
|
| 31 | 255.255.255.254 | 0xfffffffe | 11111111 11111111 11111111 11111110
|
| 32 | 255.255.255.255 | 0xffffffff | 11111111 11111111 11111111 11111111
|
