Subnet masks (IPv4) and prefixes (IPv6) - IBM
www.ibm.com › docs › enOct 10, 2010 · In IPv4, the subnet mask 255.255.255.0 is 32 bits and consists of four 8-bit octets. The address: 10.10.10.0 subnet mask 255.255.255.0 means that the subnet is a range of IP addresses from 10.10.10.0 - 10.10.10.255. The prefix-length in IPv6 is the equivalent of the subnet mask in IPv4.
Subnet Prefix Length: what is it, what should mine be ...
nuangel.net › 2018 › 05May 29, 2018 · A “/24” network means 254 usable IP addresses, a /16 means 65,534! So, to make sense of this, let’s use some examples: an IP address with a Subnet Prefix such as “192.168.1.0/24” indicates that you are using the IP addressing scheme of 192.168.1.x with the subnet mask of 255.255.255.0 and you have the 254 usable addresses (1-255).