Existing derived datatypes

Newbie question: I’m looking for a source of derived datatypes for typical
items such as address, phone number, social security number, etc. I’d
appreciate any pointers to avoid reinventing the world. Obviously, such
types will likely stray from the “worldwide? scope of the built-in XML
Schema datatypes—perhaps I should say that I’m looking for us-address,
us-socsec, et al.
/alastair/
Alastair Dallas
Infospect