It appears that bitcoin addresses using p2sh keys have a different prefix to that of normal bitcoin addresses. Do other altcoins such as litecoin, peercoin, dogecoin etc include this functionality?
Upon looking at the source of a number of altcoins I have found that p2sh keys are built into all the ones I checked.
For P2SH, the first address byte will be:
The tricky bit about this is that you can't nessesarily tell what network a P2SH address belongs to like you can with normal addresses.
The reason I wanted to know is so I could collate the version numbers for my project: