Search for “alexa top 10 million” to download the list of top 1 million web sites ranked by alexa.com. Then you can find all pinterest sites from the list.
Alternatively, you can do DNS lookups for all pinterest domains by appending each TLD as suffix. Drop the ones that are reported as “Non-existing domain”. You’ll need to write a script to do this (or see if such a script is already available).
About the partial domain blocking, i can’t understand this:
If i want block ONLY the extensions of a site, for example “google.com”, “google.it”, “google.es”, “google.fr” etc… and Nothing Else, but just the “.com”, “.it”, “.es”, “.fr” what expression i have to use?
I don’t want to block anything about google, but only its own site extensions.