MGE, you can post the phone number with no spaces and the last two digits censored like this: 012345678**, and any description of this man (name used, physical description/accent and so on) would be helpful too.
There is a comprehensive thread about how to post warnings
here, which gives all the information on what can be posted here and how. If you don't post a phone number nobody can search for it, and not everybody who looks at this section is a registered member of the forum (so won't have access to the PM system).