3 ms·
In the spirit of nitpicking, class A, B, and C referred to specific address blocks, not network sizes. A /24 in the class A range was still class A rather than
by happythought 6y ago
In the spirit of nitpicking, class A, B, and C referred to specific address blocks, not network sizes. A /24 in the class A range was still class A rather than class C.
- tptacek 6y agoSee, I had no idea. This is the best kind of nitpicking.
- swinglock 6y agoLook up CIDR on Wikipedia, which is what we use now and you know it already, but more so to learn the difference from the old classful networking. Then you'll never use "Class A/B/C" again. :) It's correct to just say /24 while Class C isn't, because it has a more specific but outdated meaning.
- tptacek 6y agoI'm familiar with CIDR, I just always understood it to mean "arbitrary prefix lengths, not just on byte boundaries".
- unethical_ban 6y agoI worked on network/firewall at a rather large bank from 2009-2019 and we used the class labels and "slash 24s" etc. interchangeably when talking. Not that you're incorrect, but that the slang was used and everyone knew what people meant by it.