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 |