Allowed Class A Subnet and Host IP addresses
| # bits |
Subnet Mask |
CIDR |
# Subnets |
# Hosts |
Nets * Hosts |
| 2 |
255.192.0.0 |
/10 |
2 |
4194302 |
8388604 |
| 3 |
255.224.0.0 |
/11 |
6 |
2097150 |
12582900 |
| 4 |
255.240.0.0 |
/12 |
14 |
1048574 |
14680036 |
| 5 |
255.248.0.0 |
/13 |
30 |
524286 |
15728580 |
| 6 |
255.252.0.0 |
/14 |
62 |
262142 |
16252804 |
| 7 |
255.254.0.0 |
/15 |
126 |
131070 |
16514820 |
| 8 |
255.255.0.0 |
/16 |
254 |
65534 |
16645636 |
| 9 |
255.255.128.0 |
/17 |
510 |
32766 |
16710660 |
| 10 |
255.255.192.0 |
/18 |
1022 |
16382 |
16742404 |
| 11 |
255.255.224.0 |
/19 |
2046 |
8190 |
16756740 |
| 12 |
255.255.240.0 |
/20 |
4094 |
4094 |
16760836 |
| 13 |
255.255.248.0 |
/21 |
8190 |
2046 |
16756740 |
| 14 |
255.255.252.0 |
/22 |
16382 |
1022 |
16742404 |
| 15 |
255.255.254.0 |
/23 |
32766 |
510 |
16710660 |
| 16 |
255.255.255.0 |
/24 |
65534 |
254 |
16645636 |
| 17 |
255.255.255.128 |
/25 |
131070 |
126 |
16514820 |
| 18 |
255.255.255.192 |
/26 |
262142 |
62 |
16252804 |
| 19 |
255.255.255.224 |
/27 |
524286 |
30 |
15728580 |
| 20 |
255.255.255.240 |
/28 |
1048574 |
14 |
14680036 |
| 21 |
255.255.255.248 |
/29 |
2097150 |
6 |
12582900 |
| 22 |
255.255.255.252 |
/30 |
4194302 |
2 |
8388604 |
Class B Subnets
Class C Subnets
Bandwidth Chart
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