What is the difference beetween the databases of the library python-whois and the site https://www.whois.com/?

[leonardo-beetech]

I am having issues with data conflict beetween the informations that the library is retrieving and the one that is found in the website. Is there some reason for it?

For example, portaldascuriosidades.com don't have any Registrant in the python library, but in the website it says it is "PROXY PROTECTION LLC"

[Keisial]

This is a consequence of this library not being able to follow whois referrals after the verisign servers changed the key name per ICANN rdds-labeling-policy. This is being tracked on issue #131

Other whois clients had the same problem, eg. rfc1036/whois#56