whois https://sssppj.org/files/journals/1/articles/380/submission/380-1-737-1-2-20221207.html

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)

https://sssppj.org/files/journals/1/articles/380/submission/380-1-737-1-2-20221207.html
checking....https://sssppj.org/files/journals/1/articles/380/submission/380-1-737-1-2-20221207.html
   $ whois https://sssppj.org/files/journals/1/articles/380/submission/380-1-737-1-2-20221207.html
No whois server is known for this kind of object.