It's possible indeed as I'm doing it for another reason (monitoring sovereigty). You can ask Icann [0] access to gTld domain list files (if you have a legitima

It's possible indeed as I'm doing it for another reason (monitoring sovereigty). You can ask Icann [0] access to gTld domain list files (if you have a legitimate reason to do so). Once access you are granted access to a gTld, you can download a compressed csv file with a line per couple <domain, nameserver>. [0] https://czds.icann.org/home https://czds.icann.org/home