Category: Traffic Director

A Service (SRV) record is intended to provide information on available services for systems, such as internet calls and messaging, and is required by certain internet protocols. Whereas most records contain only a specific IP address or hostname, SRV records also include a designated port. This record type has a priority value  and a weighted […]

Responsible Person (RP) Records contain the email address of the individual in charge of a domain name. You can supplement RP records with a TXT Record if you would like to include additional details or the full contact information of your domain’s administrator. Common Use Cases for RP Records The sole purpose of an RP […]

PTR (Pointer) records resolve IP addresses to domains. They map a network interface (IP) to a hostname for a Reverse DNS configuration. PTR records are configured within Reverse DNS  domains. PTR records work similarly to A records, but rather than providing the domain name’s associated IP address during a lookup, it provides the domains when […]

Nameserver (NS) records indicate which DNS servers are authoritative for a domain or subdomain. These are the nameservers that store the DNS records for the domain. NS Records define the name of the zone’s domain nameservers. Since these types of records don’t include IP addresses, an A record needs to be established for the domain […]

Certificate (CERT) records are a type of resource record that stores certificates and their related certificate revocation lists (CRLs) in the domain name system. Common Use Cases for Cert Records These certificates act as a means of domain security by binding public keys to digital signatures and are used to verify the authenticity of the […]

The Certification Authority Authorization (CAA) DNS Resource Record allows a DNS domain name holder to specify one or more Certification Authorities (CAs) authorized to issue certificates for that domain. CAA records can set policy for the entire domain, or for specific hostnames. They are also inherited by subdomains, therefore a CAA record set on domain.com […]

NAPTR records are most commonly used for applications in Internet telephony – in the mapping of servers and user addresses in the Session Initiation Protocol (SIP). The combination of NAPTR records with Service Records (SRV) allows the chaining of multiple records to form complex rewrite rules which produce new domain labels or uniform resource identifiers […]

The MX record means Mail eXchanger record. It specifies the mail server, responsible for accepting e-mail messages. MX records are composed of two parts: the priority and the name of the mail server. When using multiple MX records, the lowest priority value is preferred. Why do you need an MX record? If there aren’t any […]

The HINFO record allows you to define the hardware type and Operating System (OS) in use for a host. This information can be used by application protocols such as FTP, which uses special procedures when communicating with computers of a known CPU and OS type. For security reasons, these records are rarely used on public servers. […]

An ANAME record is simply a record that functions like a CNAME record but is at the root of your domain. With an ANAME record, you can point the root of your domain to a hostname or fully qualified domain name (FQDN). ANAMEs are also useful for content delivery networks (CDNs), as they allow for multiple dynamically […]