If you do the DNS traces, it's easy to see: No. They're just implementing a S3 compatible API. ;; ANSWER SECTION: noto-website.storage.googleapis.com. 3174

If you do the DNS traces, it's easy to see: No. They're just implementing a S3 compatible API. ;; ANSWER SECTION: noto-website.storage.googleapis.com. 3174 IN CNAME storage.l.googleusercontent.com. storage.l.googleusercontent.com. 300 IN A 172.217.5.112 ;; ANSWER SECTION: 112.5.217.172.in-addr.arpa. 86400 IN PTR sfo03s07-in-f16.1e100.net. 112.5.217.172.in-addr.arpa. 86400 IN PTR sfo03s07-in-f16.1e100.net.