I noticed that tiktok.com is missing, so this list might have been compiled sometime before 2019. I wonder if you could write a script that pinpoints the exact month or even day.
This attempts to scan WHOIS records for random domains in the list and try to find the most recent "registered at" date for a domain.
It's very unreliable. The whois-parser Ruby gem thought that giants.it was created on 2020-11-03 09:00:01, but I checked the record and it looks like it was actually created on 2009-09-28 11:00:43.
It looks like nature-in-art.org.uk was first registered on 21-Jul-2019
I don't know if this would provide any useful information. It would take at least a year for a brand new domain to make it into this list. And I don't know if the "created at" date can be trusted, maybe it gets reset whenever a domain is transferred, or lapses and then gets renewed.
In conclusion, I don't think this idea works at all.
