The domain ending ".ir" is used by Iran. It is the country code top-level domain (ccTLD) designated for Iran and is utilized by entities and organizations within the country. The domain is managed by the Institute for Research in Fundamental Sciences (IPM).
Austria
domain
domain
domain
The significance of nl.hu in the context of domain names is that it represents the country code top-level domain (ccTLD) for Hungary. This domain extension is used to identify websites and online resources that are associated with Hungary or have a connection to the country.
.it is Italy
.ie
The Internet top-level domain .co is Colombia in South America. Colombia is telephone country code +57.
domain
It is country domain, like "us" is for United States, "CH" is for Switzerland
I think you're referring to the top level domain. .cn is the top level domain for mainland China.