Finding what's after the slash

[augusto bott]

Hi Gurus!

I've seen lots of messages, texts and pages around and was trying to figure
out how one can know what to write after a slash ("/") on a subnet...

like, for instance, 10.1.1.0/26 meaning ip's from 10.1.1.1 untill 10.1.1.50
(is this statement correct?)

i.e., for a net like 192.168.2.45 untill 192.168.2.221 it would be what?
Thanks...

Augusto Bott
augusto.bott at via-rs.net