This looks like a port scanning address, which is normal. Being scanned is just a fact of life if you host a service on the internet. What exactly was in your access log? Is it a connection on / ? Is it a 404 on a weird path? Is it accessing data on a service you run?
Personally, I’d block the IP and move on, since 99 times in 100, its not too big of a deal since an automated scan won’t do much. If it is scanning services you actively run, it would warrant digging in deeper, reading all logs and bit more closely, but it is still not too likely it will result in an intrusion.
When I was at college, I used a free tier AWS box to allow me to make things inside the school network public through some SSH and proxy shenanigans, and I used the box to let me escape the anti-vpn firewall rules they had by tunneling my VPN service through SSH
Unfortunately, this is a third party, but considering its a cloud platform, it might be a bit more reliable than a third party service.