Allowed Class B Subnet and Host IP addresses
| # bits |
Subnet Mask |
CIDR |
# Subnets |
# Hosts |
Nets * Hosts |
| 2 |
255.255.192.0 |
/18 |
2 |
16382 |
32764 |
| 3 |
255.255.224.0 |
/19 |
6 |
8190 |
49140 |
| 4 |
255.255.240.0 |
/20 |
14 |
4094 |
57316 |
| 5 |
255.255.248.0 |
/21 |
30 |
2046 |
61380 |
| 6 |
255.255.252.0 |
/22 |
62 |
1022 |
63364 |
| 7 |
255.255.254.0 |
/23 |
126 |
510 |
64260 |
| 8 |
255.255.255.0 |
/24 |
254 |
254 |
64516 |
| 9 |
255.255.255.128 |
/25 |
510 |
126 |
64260 |
| 10 |
255.255.255.192 |
/26 |
1022 |
62 |
63364 |
| 11 |
255.255.255.224 |
/27 |
2046 |
30 |
61380 |
| 12 |
255.255.255.240 |
/28 |
4094 |
14 |
57316 |
| 13 |
255.255.255.248 |
/29 |
8190 |
6 |
49140 |
| 14 |
255.255.255.252 |
/30 |
16382 |
2 |
32764 |
Class A Subnets
Class C Subnets
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