Value,Name,Reference
0,FramebufferUpdate,[RFC6143]
1,SetColourMapEntries,[RFC6143]
2,Bell,[RFC6143]
3,ServerCutText,[RFC6143]
4-15,Possibly used in UltraVNC,historic assignment
16-126,Unassigned,
127,VMWare,historic assignment
128,Car Connectivity,"[J?rg_Brakensiek]
        [Terminal Mode v1.0]"
129-149,Unassigned,
150,TightVNC EndOfContinuousUpdates,historic assignment
151-172,Unassigned,
173,ServerState,historic assignment
174-244,Unassigned,
245,Replit Audio Server Message,[Luis_H¨Śctor_Ch¨˘vez]
246,Dell-EMC,[Rajeshkumar_Patel]
247,Dell-EMC,[Rajeshkumar_Patel]
248,ServerFence,TigerVNC
249,OLIVE Call Control,historic assignment
250,Colin Dean xvp,historic assignment
251,Unassigned,
252,tight,historic assignment
253,gii,historic assignment
254,VMWare,historic assignment
255,Anthony Liguori,historic assignment