ICC registry number on the Quantum.
In the mirror universe, ICC was a prefix for Terran Empire registry number for some of its Starfleet starships. (STO - Cardassian Struggle mission: "Defend the Beta Ursae Sector Block")
History[]
United Empire of Planets[]
In a reality where Earth turned militaristic following a brutal defeat of the Augments in the Eugenics Wars, the Terrans formed the United Empire of Planets. Imperial Starfleet used the registry prefix "ICC". It was applied to the ISS Enterprise (ICC-1701) in the 2260s decade, and the ISS Enterprise (ICC-1701-D) of the 24th century.
In the year 2367, the Enterprise-D invaded the primary universe and was infiltrated by the crew of the Federation starship USS Enterprise (NCC-1701-D), who took notes of the major and minor differences between their vessels. (TNG novel: Dark Mirror)
Terran Empire[]
In the year 2409, the Second Terran Empire deployed the Sao Paulo-class tactical escort ISS Quantum with the registry number ICC-40859. (STO - Cardassian Struggle mission: "Defend the Beta Ursae Sector Block")
Kelvin timeline[]
In one mirror version of the Kelvin timeline, the ISS Enterprise was the Imperial flagship in the year 2262. Its counterpart was the USS Enterprise (NCC-1701). (TOS - Live Evil comics: "Part 1", "Part 2", "Part 3")