Found a visitor from the past in my logs:
UA: Mozilla/4.0 (compatible; MSIE 6.0; America Online Browser 1.1; rev1.5; Windows NT 5.1; SV1; .NET CLR 1.1.4322; InfoPath.1)
Robots.txt: No
Protocol: HTTP/1.1
Host: AWS
NetRange: 54.176.0.0 - 54.191.255.255
CIDR: 54.176.0.0/12