The lower 48 and D.C. have listings.
The top 8 allergens are covered plus any others that the restaurants have added to their website. Plus, any other allergen that the listings may cover and the information is provided on their website.
Geo-location(Radius) is a feature that can be used either at home or on the highway that lets you find a listing up to 100 miles.
Any restaurants website that has food allergy information listed on their respective website.