At 28 Apr 00 17:41, Peter Scott <Peter@PSDT.com> wrote: Peter Scott <Peter@PSDT.com> wrote: > /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/&&!((1|$1|$2|$3|$4)&256) That doesn't work. Try 512.1.1.1, for example, or anything else that has a number greater than 256 without the 256 bit set. Try this: /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/&&($1|$2|$3|$4)<256 -- Keith C. Ivey <kcivey@cpcug.org> Washington, DC ==== Want to unsubscribe from Fun With Perl? Well, if you insist... ==== Send email to <fwp-request@technofile.org> with message _body_ ==== unsubscribe