What is a country top-level domain? What are the country top-level domains?

Country code top-level domains (CCTLDs), also known as country code top-level domains (CCTLDs), primarily refer to the abbreviation of a country name. They represent a country or region, such as .cn for China, .us for the United States, .fr for France, and .jp for Japan.

CCTLDs are managed by each country's Internet Network Information Center (NIC). For example, our CN domain is managed by the China Internet Network Information Center (CNNIC).

Domain names were designed to eliminate the need to remember IP numbers, so they use characters rather than numbers to access websites. Domain names are formed by DNS resolution between IP numbers and characters. Once you have a domain name, you can access the website directly through it. Among the top-level domains, in addition to country code top-level domains, there are also international top-level domains (TCDs), such as .com, .top, .net, .org, .gov, .edu, and .biz.

If you use an international TLD to build a website, you generally prefer a .com domain because it's the most common, easier to remember, and easier to search. Surveys show that domain names ending in .com are more beneficial for search engine optimization.

In addition to TLDs, there are also second-level domains, third-level domains, and multi-level domains. A second-level domain name is a domain name below a top-level domain name, such as news.xxx.com.

A third-level domain name, such as m.news.xxx.com, is a subdomain of a second-level domain name. Generally, third-level domain names are free. Multi-level domain names are added to the original domain name.