My initial impression is that it’s baked into the application code, called at runtime, and populated with REST. (Yes–I’m looking at change logs and you said call logs. It’s all the same–buried in this awful JS file).
I’m poking my friend to see what she says, but I suspect she’ll come back with a “Sorry, you’re S.O.L.”
And with that… I think it’s time to go play some Rocket League. 