The website contains dublin core meta data extensions.
https://dublincore.org
Syndication Techniques
Get access to data on 1,821,576 websites that are Dublin Core Customers. We know of 550,008 live websites using Dublin Core and an additional 1,271,568 sites that used Dublin Core historically and 173,100 websites in the United States.
Get a list of 1,821,576 websites using Dublin Core which includes location information, hosting data, contact details, 550,008 currently live websites and an additional 628,113 domains that redirect to sites in this list. 1,271,568 sites that used this technology previouslyand 173,100 websites in the United States currently using Dublin Core.
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