You can also get live allocations for many services (almost all IC/ICE services plus a lot of DB Regio) at
https://bahn.expert/
Click on the menu, go to Einstellungen, then scroll down to the section marked "Reihungsoptionen" and turn the "UIC Nummer" option on.
Then when you select a station and click on a specific train, you should get something like the below. In this case it is an Amsterdam to Berlin Ost train and it shows the loco number (NS
Vectron 6193 263) and stock formation.
View attachment 171949