I tried to check the whois information of a ".in" website at lookup.icann.org/en, but it gave the following error: Failed to perform lookup using WHOIS service: TLD_NOT_SUPPORTED.
Does ICANN not recognize ".in" websites?
It's clear from the error message that ICANN does not support ".in" TLD. There are several other websites where you can check the whois information for any website. One of them is GoDaddy's whois page: www.godaddy.com/whois
Visit the whois page of GoDaddy and check the whois information for any domain.