| Bitmask (Bits) |
Dotted Decimal Netmask |
Hexadecimal Netmask |
Binary Netmask |
| /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 |
| /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 |