AVG blacklists an IP, yet it's not on any blacklist

AVG is blocking a connection to 54.38.216.83, yet https://dnschecker.org/ip-blacklist-checker.php?query=54.38.216.83 says it’s not on any blacklist. I have no idea what this IP is used for.

Stupid AVG didn’t put anything in the log about which program was using the IP. Or maybe windows won’t tell it? It appears with windows you can only see CURRENT connections, so I’d have to catch it in the act.

It’s coming from startallback. A common program. Come on AVG keep up.

For goodness sake AVG, tell me what program connects to something you don’t like.