View the Addresses of IP Subnets at LBNL, NERSC and JGI (LBNL login required).
This page uses CIDR “slash” notation. Below is a reference table for commonly used subnet sizes in CIDR notation and their corresponding Subnet Mask notation:
CIDR “slash” notation | Subnet Mask Notation |
---|---|
/19 | 255.255.224.0 |
/20 | 255.255.240.0 |
/21 | 255.255.248.0 |
/22 | 255.255.252.0 |
/23 | 255.255.254.0 |
/24 | 255.255.255.0 |
/25 | 255.255.255.128 |
/26 | 255.255.255.192 |
/27 | 255.255.255.224 |
/28 | 255.255.255.240 |
/29 | 255.255.255.248 |