Page speed performance tools for WordPress.
https://wpmudev.com/project/wp-hummingbird/
Verified CDN
Get access to data on 103,745 websites that are Hummingbird Cache Customers. We know of 73,737 live websites using Hummingbird Cache and an additional 30,008 sites that used Hummingbird Cache historically and 31,573 websites in the United States.
Get a list of 103,745 websites using Hummingbird Cache which includes location information, hosting data, contact details, 73,737 currently live websites and an additional 73,906 domains that redirect to sites in this list. 30,008 sites that used this technology previouslyand 31,573 websites in the United States currently using Hummingbird Cache.
Countries
Financial
Group
Region
These are sites that we think might use Hummingbird Cache in the future because of their similarity to other sites that already do.