Basic DNS Record Types

With a basic knowledge of DNS, you know that different types of records are required to identify hosts and different types of services and attributes related to the domain.

The most common types of DNS records used in most domains and their most common uses are described below.

 

RecordTypeExplanation
AIPv4 Address RecordAssociate a hosts name with an IPv4 address
MXMail Exchange RecordUsed to identify mail servers that perform mail services for the domain
NSName ServerIdentifies an authoritative DNS server for a particular zone
PTRPointerMaps IP addresses to hosts for use in a reverse DNS lookup
SRVService LocatorService Locator – A general service record. Used generically instead of creating protocol specific records such as MX.
AAAAIPv6 Address RecordAssociate a hosts name with an IPv4 address
CNAMECanonical Name RecordUsed to create an alias to reference one host by multiple names
DNAMEDelegation Name Recorddelegates an entire portion of a DNS tree under a new name not to be confused with CNAME which is for an individual name.
LOCLocation Record Specifies a geographical location of a domain
SOAZone Authority Record Contains authoritative information about a domain including: serial number which other servers for the zone can use to identify changes; primary name server; refresh to identify the interval to check for serial number changes; email of domain administrator; and other information.
SPFSender Policy FrameworkStores information relating to the SPF Protocol. SPF data can be stored in the type of record or in a TXT record.
TXTText RecordUsed to store various values such as SPF information

The most common ones typically used are:

NS, A, MX and SPF

Kevin Arrows


Kevin is a dynamic and self-motivated information technology professional, with a Thorough knowledge of all facets pertaining to network infrastructure design, implementation and administration. Superior record of delivering simultaneous large-scale mission critical projects on time and under budget.

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Basic DNS Record Types

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