It's curious to note that the very first domain registration on any gTLD came from NORDUnet [1], precisely at the first day after the public launching of the Domain Name System, back in Jan 1, 1985. [2]

[1] https://en.wikipedia.org/wiki/NORDUnet

[2] https://en.wikipedia.org/wiki/List_of_the_oldest_currently_r...