The website contains dublin core meta data extensions.
https://dublincore.org
Syndication Techniques
Get access to data on 1,818,556 websites that are Dublin Core Customers. We know of 570,903 live websites using Dublin Core and an additional 1,247,653 sites that used Dublin Core historically and 180,678 websites in the United States.
Get a list of 1,818,556 websites using Dublin Core which includes location information, hosting data, contact details, 570,903 currently live websites and an additional 628,559 domains that redirect to sites in this list. 1,247,653 sites that used this technology previouslyand 180,678 websites in the United States currently using Dublin Core.
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