Final answer:
The tool used to look up Xfinity stores is the Xfinity Store Locator.
Step-by-step explanation:
The tool used to look up Xfinity stores is the Xfinity Store Locator.
The Xfinity Store Locator is an online tool that allows users to find the nearest Xfinity stores based on their location.
To use the Xfinity Store Locator, you can visit the official Xfinity website or use the Xfinity mobile app. Simply enter your address or ZIP code, and the tool will provide a list of nearby Xfinity stores along with their addresses, contact information, and hours of operation.