Adobe Acrobat Sign is a distributed application, spanning multiple environments around the globe.
Each environment is tightly integrated with all of the others, ensuring seamless transactions between senders and recipients, regardless as to which environment each resides in.
However, occasionally it becomes important to know which environment contains your account. During maintenance or upgrade windows for example.
To find which environment holds your account, just log in to Acrobat Sign, and check the URL.
The environment identifier is found in the URL address, just before the echosign.com (or adobesign.com) portion.