If you have access to multiple Marketo subscriptions and want to be sure which one you're using, try giving each one a unique name. That name then displays at the top of your subscription page.
For example, if you work in both production and sandbox instances, you can name one subscription Marketo Production and the other Marketo Sandbox.
1. Go to Admin.
2. Click My Account.
3. Click Edit Subscription Information.
4. Make your edits and click Save.
Ta-da! Your subscription has a new name.