Old postings but as nobody has replied - 

Germany only uses D-A (multi-engine with a MTOW over 20,000kg), D-B (multi-engine 14,000 to 20,000kg) , D-C (multi-engine 5.700 to 14,000kg, D-E (single engine below 2,000kg), D-F (single engine 2,000 to 5700kg), D-G (multi engine below 2,000kg), D-H (rotary wing), D-K (powered gliders), D-L (airships), D-M  (ultralights) and D-O (free balloons) for aircraft, so nothing outside of DAA to DRZ

Philipines uses RP (for Republic Philippines) I presume they have some exception from the ICAO to use it. The russians only use RA and RF for aircraft.

Swaziland/Fiji - Fiji uses DQ (from 3DQ to avoid confusuion because 3D is used by Swaziland) DQ is not used by Germany for aircraft.