Problem using historical flight info API

Aviation
1

I am hitting the below API but airline code KKK or KK ( atlasglobal ) is not recognized.

https://aeroapi.flightaware.com/aeroapi/history/flights/kkK1185?ident_type=designator&start=2020-01-08T00:00:01Z&end=2020-01-09T00:00:01Z)