shell:$ nslookup -timeout=2 -retry=1 'gcs-us-00003.content-storage-upload.googleapis.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
gcs-us-00003.content-storage-upload.googleapis.com	canonical name = gcs-upload-us.l.googleusercontent.com.
gcs-upload-us.l.googleusercontent.com	canonical name = gcs-blue-upload-us.l.googleusercontent.com.
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 173.194.201.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 173.194.199.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 173.194.70.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 108.177.104.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 64.233.160.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 108.177.9.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 142.250.158.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 74.125.127.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 142.251.187.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 173.194.78.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 142.251.190.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 209.85.235.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 74.125.27.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 64.233.168.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 173.194.67.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 64.233.169.207
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 2607:f8b0:4003:c3e::cf
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 2607:f8b0:4003:c19::cf
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 2607:f8b0:4003:c17::cf
Name:	gcs-blue-upload-us.l.googleusercontent.com
Address: 2607:f8b0:4003:c18::cf