I'm not sure if this is given information but hear me out. While looking around Ice Box one time, I found out that The Kingdom Corp. HQ is located in California. The blue box right in front of attacker spawn near the ramp has a sticker on it that says:

MANAGED AND OPERATED BY

THE KINGDOM CORP.

12333 W OLYMPIC BLV.

LOS ANGELES, CA 90064

So I looked it up and saw that is Riot Games Inc. HQ. Thank you for coming to my TED talk.

https://imgur.com/a/h3j9h6J

Update: Thanks for the silver!!!