Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and …
https://www.freecodecamp.org/news/subnet-cheat-sheet-24-subnet-mask-30-26-27-29-and-other-ip-address-cidr-network-references/
Feb 12, 2021 · Class C IP Addresses. For Class C IP addresses, the first three octets (24 bits / 3 bytes) represent the network ID and the last octet (8 bits / 1 bytes) is the host ID. Class C IP Addresses range from 192.0.0.0 to 223.255.255.255, with a default subnet mask of 255.255.255.0 (or /24 in CIDR).
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