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 | This article needs to be updated. (May 2021) |
This list of Internet top-level domains (TLD) contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet. A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database.[1] IANA also oversees the approval process for new proposed top-level domains for ICANN. As of April 2021[update], their root domain contains 1502 top-level domains.[2][3] As of March 2021[update], the IANA root database includes 1589 TLDs. That also includes 68 that are not assigned (revoked), 8 that are retired and 11 test domains.[1] Those are not represented in IANA's listing[2] and are not in root.zone file (root.zone file also includes one root domain).[4]
Types
IANA distinguishes the following groups of top-level domains:[5]
- 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)
Original top-level domains
Seven generic top-level domains were created early in the development of the Internet, and predate the creation of ICANN in 1998.
- Name: DNS names
- Entity: intended use
- Administrator: managers
- Notes: general remarks
- IDN: support for internationalized domain names (IDN)
- DNSSEC: presence of DS records for Domain Name System Security Extensions