PTR record might not be a term that easily comes to mind, yet it plays a crucial role in ensuring the efficiency and reliability of various online services. In this blog post, we will delve into the importance of these records and explore why they are essential for businesses and individuals alike.
What is a PTR Record?
PTR, which stands for Pointer, is a type of Domain Name System (DNS) record that is used to perform a Reverse DNS lookup. Unlike traditional DNS records, which translate domain names into IP addresses, PTR records do the reverse—they associate IP addresses with corresponding domain names. In simple terms, a Pointer record helps identify the domain name associated with a specific IP address.
Here’s a quick rundown of the most useful DNS terms. Learning the complex structure of the Domain Name System as a beginner can be extremely frustrating. But, if we start explaining, everything will become much more straightforward and make more sense.
Domain Name System (DNS)
The Domain Name System, or DNS, is a critical component of the Internet. It’s a global naming database that converts internet domain names to IP addresses (Internet Protocol). DNS is a multi-level hierarchical system that is decentralized. Humans no longer need to remember long and complicated numbers (for example, 188.8.131.52) in order to access and explore every website thanks to this technology. Instead, visitors can type the domain name directly into their browser and go to their selected web page.
Dynamic DNS is the second term in our list of DNS terms. Dynamic DNS (DDNS) has the advantage of automatically updating and changing the host’s IP address.
These DNS records are going to help you set the grounds for extremely secure and safe email communication. So, let’s start with our short list.
One of the most popular DNS records is the A record, also known as an Address record. It points a domain name to its corresponding IP address (IPv4 address). Its purpose is fundamental. In addition, it shows that the particular domain name is associated with that IP address. However, it does not direct the mail servers, and they wouldn’t know where they should send email messages.