Hi,
.com, .org, .net, .edu, .gov, .int, .biz, .info, .name, .pro
all these are top level domain.
Its TLD - Top Level Domain.
The two-digit abbreviation is AQ The three-digit abbreviation is ATA The Internet Domain extension is .aq
Top Level Domain in Internet domain naming conventions/protocol.
The abbreviation at the end of Irish domain names is ie. Anyone applying for an ie domain name who does not reside in the 32 counties of Ireland must prove a Real and Substantive Connection with Ireland.
I've seen it abbreviated as CN (though that is the internet domain for China)
Suriname's abbreviation is SR. This abbreviation is used in Suriname's world airport code. It also is the Internet country-code top-level domain [ccTLD].
The abbreviation of the protein domain 'SET' stems from three proteins containing the domain: Su(var), Enhancer of zest, and Trithorax.
GOVernment, its a government domain for government sites like nasa.gov
DNS stands for Domain Name System.
The Domain Name System or DNS for abbreviation.
.EDU is an abbreviation for "education." It's a generic top-level domain (gTLD) of the internet Domain Name System (DNS). To register a .EDU domain name, the registrant must be a U.S.-affiliated institution of higher education.
It's HN. The Internet TLD (Top Level Domain) is .hn