IANA distinguishes the following groups of top-level domains:

As of June 2020, there are 1,514 top-level domains (TLDs) currently in use according to the Internet Corporation for Assigned Names and Numbers (ICANN), the non-profit that regulates and coordinates the internet domain namespace.

As of now, there are currently 21 generic top-level domains within the root zone, which is the highest level of the domain name system structure. While there are over 1,500 gTLDs in use, these 21 make up the vast majority of all types of domain names. They include four sub-categories: Generic (.com, .

.com URLs are over 33% more memorable than URLs with other top-level domains. .com is the #1 most trusted TLD, with . co in a close second place. When people try to remember a URL, they’re 3.8 times more likely to assume it ends in .com than anything else.

mil. However, as of the end of 2019, there are a whopping 1,517 different domain extensions or TLDs out there to choose from. Unlike domain names, which are constantly being added and erased, this figure doesn’t change as dramatically.

• infrastructure top-level domain (ARPA)
• generic top-level domains (gTLD)
• generic-restricted top-level domains (grTLD)
• sponsored top-level domains (sTLD)
• country code top-level domains (ccTLD)
• test top-level domains (tTLD)

5 Different Types of Domains Available

• Top-Level Domains. Top-level domains are at the top of the internet hierarchy of domain names.
• Country Code Top Level Domains. Next, on the list, we have country code top-level domains (ccTLD).
• Generic Top-Level Domains.
• Second-Level Domains.
• Third Level Domains.

One of six original TLDs — .com, . edu, . gov, . mil and .

The Most Popular Top-Level Domains

• .com – 147,997,952.
• ru – 4,822,398.
• org – 10,177,804.
• net – 13,260,803.
• info – 4,474,340.
• biz – 1,510,528.

co domain extension could be both better and worse than . net. co domains as a .com, typing that into the web browser. So it’s best to always go with the .com version if it’s available.

In total there are now more than 200 ccTLDs, all of which can be found in the top-level domain list below. Country-specific domain extensions generally indicate the region or language that the website’s content is relevant for.

All ASCII ccTLD identifiers are two letters long, and all two-letter top-level domains are ccTLDs. In 2018, the Internet Assigned Numbers Authority (IANA) began implementing internationalized country code top-level domains, consisting of language-native characters when displayed in an end-user application.

Country-specific domain extensions generally indicate the region or language that the website’s content is relevant for. Furthermore, ccTLDs always include two letters of the Latin alphabet. The only exceptions to this rule are the countries with IDN-ccTLDs (internationalized country code top-level domains).

There are 308 delegated ccTLDs. The .cn, .tk, .de and .uk ccTLDs contain the highest number of domains. The top ten ccTLDs account for 64.3% of registered ccTLD domains and there were 156.5 million ccTLD domains registered at the end of March 2021.