Yassine Chaouche <a.chaou...@algerian-radio.dz> wrote: > Le 3/18/23 à 12:28, cor...@free.fr a écrit : > > Hello > > > > I know 192.168.1.0/24 is a valid C range for network address. > > > > but what does 192.168.1.1/24 mean? > > > > I ask this just for a setting in the SPF: > > > > spf.pinoad.se. 300 IN TXT "v=spf1 > > ip4:188.66.63.1/24 -all" > > > > > > Thanks. > > > > The A.B.C.D/24 notation can be used to either : > - specify an IP address along with its netmask > - specify a network address when D=0.
Except in an SPF record when its meaning is defined somewhat differently by RFC 7208 as already noted upthread.