Google-Certificates-Bridge User Agent .well-known/acme-challenge Requests

I recently have been having many requests coming from Google IPv4 and IPv6 addresses with the user agent “Google-Certificates-Bridge” accessing unique files within /.well-known/acme-challenge/XXXX. A snippet from my Apache Log 64.233.172.141 – – [25/Dec/2018:23:30:30 +0000] “GET /.well-known/acme-challenge/LjaR-XXXXXXXXXXXXX-lgf6-QW8 HTTP/1.1” 404 – “-” “Google-Certificates-Bridge” 64.233.172.145 – – [25/Dec/2018:23:30:40 +0000] “GET /.well-known/acme-challenge/LjaR-XXXXXXXXXXXXX-lgf6-QW8 HTTP/1.1” 404 – “-” “Google-Certificates-Bridge” 64.233.172.143 … Read more