How else to parse, all methods failed?

Question

Parsing

What was tried:
download managers (WinHTTrack, Download Master)
cURL
cURL + cURL proxy list
+ header combinations
Self-written-extension to Chrome
Run one page per second, per minute, ....
Naked browser in manual mode)))
20- 30 pages successfully, Phantomgees Google Recaptcha
could not be launched further due to hosting. Yes, and will it help ...
The essence of the matter is to obtain, in principle, publicly available data, for a small experiment.
Patient: whois.com

Answer 1

If you have unix-based os, then you can use the output of the whois console command

Answer 2

I parsed the Mikrotik logs for the connection from which places, I used api.whois.vu

Answer 3

get in principle publicly available data, for a small experiment.
Patient: whois.com

How else to parse

Probably not, and that's good. This is how user information protection should work.
I doubt that you yourself would like that someone collects your data specified during the registration of the domain (s) for some kind of "small experiment".
What you consider available "in principle" is available for use on a case-by-case basis, for specific domains, not for mass collection.