LH has so called 'areas'. FRA based crew have 4 areas, MUC 1 area (NM). Each FA is assigned an area they can operate in. This is assigned at the time of hire or on request. Each area also has to fly a specific shorthaul aircraft type in between interconts.
Assignments in Summer 2006, for an example:
NL
B747: JFK, EWR, TLV, PEK, PVG, HKG, SIN/CGK
A340: ATL, JED/ASM, THR, GYD/ASB, KWI/DOH, DXB/AUH, KWI/DMM, RUH/MCT, DXB/MCT, KWI/AUH, ALA, TLV, AMM, ICN, PVG, CAN/MNL
ND:
B747: MIA, YYZ, MEX, GRU/EZE
A340: BOS, IAH, PDX, YVR, CCS
NB
B747: JFK, ORD, DEN, NRT, BOM, MAA, DEL, BKK/SGN, BKK/KUL
A340: JFK, ORD, NGO, KIX, HYD, BLR
NG
B747: IAD, LAX, SFO, JNB
A340: PHL, DFW, DTW, PHC/ABV, LOS/ACC, CPT, CAI, KRT/ADD, CAI/SAH
NM
A340: JFK; IAD, BOS, CLT, ORD, LAX, SFO, YUL, THR, DXB, NRT, PEK, PVG, HKG, DEL
Quoted from Crewlounge forum
Most FRA based crews are trained on the 744 and the A330/340 to keep the destinations they fly to varying. Pursers need to be trained on all types.