Re: [Exim] Hi.. Can someone send me a link to a good explana…

On Tue, 13 Mar 2001, Derrick MacPherson wrote:

> i.e. - 10.10.10.0/12 = what range does the 12 represent?

The 12 most significant bits, i.e. the mask is 255.250.0.0 in your
example (or FFF00000 in hex). So 10.10.10.0/12 would match 10.0.0.0 to
10.15.255.255. (And is confusing, because the simplest way to write it
is 10.0.0.0/12.)

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.