Whilst this doesn't answer your question directly this information might be useful.
The XBee range hold the following approvals:
The device itself is generally what needs to be approved rather than the protocol as it is all based around the IEEE 802.15.4 standard.
Hopefully someone else can answer you directly. Alternatively you could contact your local distributor who could answer this question. Someone like mouser should be able to help http://tw.mouser.com/new/Digi-International/