See: A Record
Glossary of terms
The glossary of domain related abbreviations and terms shall help you to find your way in the complex world of domains.
32-bit IPv4 address, used to map hostnames to an IP address of the host test.example.com. 28800 IN A 192.0.2.1
128-bit IPv6 address, used to map hostnames to an IP address of the host. test.example.com. 28800 IN AAAA 2001:0db8:85a3:0000:0000:8a2e:0370:7334
Accounting and Corporate Regulatory Authority
Alternative Dispute Resolution
Application Programming Interface
Abbreviation for country code top level domain. Examples are .de for Germany, .fr for France and .us for the USA. The ccTLDs are geographically defined and composed of two letters.
Alias of the domain name, the DNS lookup will continue by retrying the lookup with the new name. foo.example.com. 28800 IN CNAME bar.example.com.
Country Code Administrators Incorporated
Certificate Signing Request
Domain Availability Service
An internet address, also called web address, e.g. key-systems.net. It helps to identify computers on the Internet. The domain is part of the URL of a website (e.g. http://www.key-systems.net). It is composed of a term (key-systems), a subsequent point (.) and a top level domain (e.g. .net). The term which prefixes the top level domain, can be divided into further levels (Subdomain). A domain describes a name space on the Internet.
Early Access Phase
Extensible Provisioning Protocol
Form of Authorisation
General Data Protection Regulation
Hong Kong Domain Name Registration Company Limited
Hosting Management Environment Repository
Internet Assigned Numbers Authority https://www.iana.org/
Internet Corporation for Assigned Names and Numbers https://www.icann.org/
Institute of Electrical and Electronics Engineers
Internet Engineering Task Force https://www.ietf.org/
Internet Provider Security Tag used to identify .UK domain registrars
Inter-Registrar Transfer Policy
Letter of Authorisation
Mail exchange record, maps a domain name to a mailserver for that domain. Composed of priority, a 16 bit integer, and the hostname of the mailserver. example.com. 28800 IN MX 10 mail.example.com.
Naming Authority Pointer, allows regular expression based rewriting of domain names which can then be used as URIs, further domain names to lookups, etc. NAPTR records are composed of a priority, a preference, which helps to order records with identical priority, similar to the SRV records weight, a flag for the returned record type, a service name, which is offered by the server, a regular expression rule and a replacement. srv.ex.com. 28800 IN NAPTR 100 10 "A" "" "!^.*$!prodsrv.ex.com!"
Name Server Tester
Delegates a DNS zone to use the given authoritative name servers. ns1.example.com. 28800 NS nameserver.example.org.
Operations and Notifications
Operational Test & Evaluation
Persona De Contacto Administrativo
Persona De Contacto De Facturacion
Persona De Contacto Tecnico
Public Interest Registry http://pir.org/
Power of Attorney
Portable Operating System Interface
Registrar Accreditation Agreement
Registered Name Holder
Repository Object IDentifier
Registry Registrar Protocol
Service Level Agreement
Simple Object Access Protocol
Secretaria da Receita Federal
Shared Registry System
Service location record, used for newer protocols instead of creating protocol-specific records such as MX. The SRV record is composed of a priority, a weight, which serves as second level priority between services with identical priority, a port, the TCP or UDP port where the service can be found, and the target, the name of the service providing host. _jabber._tcp.example.com. 28800 IN SRV 0 5 5060 jabber.example.com
Abbreviation: TLD, viewed from the right hand side, the first character group (.net) and thus highest level of the domain name (key-systems.net). Domain names are composed of a sequence of characters separated by points. Those character groups match hierarchically arranged name spaces. The hierarchy of the character groups declines from right to left.
Free definable, descriptive text. test.example.com. 28800 IN TXT "Free T-Shirts for all!"
Unique Domain Authenthication ID
Uniform Domain Name Dispute Resolution Policy
Value Added Tax identification number
Whois Data Reminder Policy
X-HTTP records are pseudo resource records in our system representing webforwardings. The resource data is composed of redirection type (REDIRECT or FRAME) and the target. Note that pseudo records will neither appear in the records list nor in the exported BIND file. The creation of a X-HTTP pseudo record will also add an A record though, which can not be deleted as long as the forwarding exists. forwarding.example.org. 28800 IN X-HTTP REDIRECT http://target.example.com
X-SMTP records are pseudo resource records in our system representing mailforwardings. Note that pseudo records will neither appear in the records list nor in the exported BIND file. The first creation of a X-SMTP pseudo record will also add a MX record though, which can not be deleted as long as any mailforwarding exists. The example shows a forwarding from 'firstname.lastname@example.org' to 'email@example.com'. mario.example.org. 28800 IN X-SMTP itsame@ MAILFORWARD firstname.lastname@example.org