Anonymous Monk,
I am betting you will be surprised to find out that not all OIDs are the same. OID is defined as an Object Identifier - a string of digits seperated by periods with the most signficant digits being found to the left and working right towards least significant.

That is where the similarities end. I did various searches on CPAN and Google looking for an RFC or a pre-existing regex to do what you were looking for. I found lots of OIDs that didn't look like your example. So to answer your question further - you will have to specificy exactly which kind of OID you are using (application/log that has the OIDs in question).

Cheers - L~R