A PTR record, also known as a pointer record, is atype of DNS recordthat maps an IP address to a domain name. While regularDNShelps translate domain names to numerical IP addresses that computers can understand, a PTR record provides a domain name associated with a particular IP address. ...
A PTR record (Pointer Record) is a type of DNS record that maps an IP address to a domain name, enabling reverse DNS lookups. It is the opposite of an A record, which maps a domain name to an IP address. PTR records are essential for verifying the authenticity of an IP address, par...
PTR: This verifies if the reverse DNS record of the sending server matches the authorized domain name. EXISTS: This is the mechanism for specifying a domain, and the receiving mail server queries DNS for address records for that domain. With any result - if one or more address records are ...
Start of Authority (SOA) Record: Declares the most authoritative host for the zone. Every zone file should include an SOA record, which is generated automatically when the user adds a zone. Pointer (PTR) Record: Creates a pointer, which maps an IP address to the host name in order to do...
Learn how Adaptive Multi-Factor Authentication combats data breaches, weak passwords, and phishing attacks. Learn more What Is a DNS PTR Record & What Is It Used For? A pointer (PTR) record resolves an IP address (made up of numbers and decimals) into a domain name. Learn more To...
PTR record: How does the DNS record work? PTR records turn the DNS on its head: Instead of getting from a domain name to the corresponding IP address – as is normally the case – with reverse DNS the opposite occurs. Which domains belong to an IP address? You can acquire this informat...
This is where all the DNS records are stored for a domain. Host Record: This is the domain or subdomain you wish to use. The @ symbol is used to indicate the root domain itself. In our example the Host Record 'ftp' would be for the subdomain ftp.google.com and '@' would be goo...
What Is a Reverse DNS? A reverse DNS (rDNS) or reverse DNS lookup concerns a DNS request that can be used to determine a certain domain name or hostname for an IP address. This requires that a PTR record (pointer entry) exists for the queried internet address, which refers to the na...
A user enters a domain name, such as “ibm.com,” into a browser or app and the request is sent to a recursive DNS resolver. Typically, the user's device has predefined DNS settings, provided by the internet service provider (ISP), that determine which recursive resolver a client queries...
A user enters a domain name, such as “ibm.com,” into a browser or app and the request is sent to a recursive DNS resolver. Typically, the user's device has predefined DNS settings, provided by the internet service provider (ISP), that determine which recursive resolver a client queries...