What is PTR record? Discover the gravity of PTR records and how they enhance email deliverability and network security by ensuring your online communications are efficient and trustworthy.

List of blogs you will fall in this content:

1. DNS and PTR records
2. Why is it a good idea to use a PTR record?
3. What you need to do
4. Final words
5. Frequently Asked Questions

One of the important things we should draw your attention to on Internet sites is linking the domains we have to our site If you’re serious enough that you start a website, you buy the domain and buy it yourself, and then you manage your site files using a framework or a content management system.

You can upload one, then with a little evaluation; Your site will be up and running; In short, if you type your domain into a browser, the site will appear for you.

This term, we’ll go into this and beyond!

DNS and PTR records

DNS is an important mechanism that connects hosts and domains, enabling the site to be forwarded through purchased domains; But it should be seriously considered that if we go to DNS, we will see that they have many entries in this category.

There are many more practical things that are done between domains, such as email services and all the subdomains, each of which has its own DNS and, in addition to an IP and two NSs, there are other elements such as expiration times and things like that. .

In various words, there are many several types of DNS records, and it can be difficult for beginners to know which DNS record is needed or how to set it up. In this tutorial, you’ll learn what a PTR record is and how to check if it’s set to an IP address, commonly known as a reverse IP lookup.

On the flip side, a PTR recording is like a reverse recording—a record sets a domain name to an IP address, while a PTR sets an IP address to a hostname. But these two records are independent.

An example:

A record for hostinger.com might point to 21.21.128.xx, while 23.23.128.xx might be set to a completely different hostname.

A record

Regardless of what I alluded to above, to begin with, you should know that a PTR record has a fully different function from a record. Record A (a record) is responsible for converting domain to IP and PTR is responsible for converting IP to domain. so,

Why is it a good idea to use a PTR record?

This is first and foremost useful for outgoing mail servers – this record adds extra reliability to sending servers and allows the recipient to verify the hostname of an IP address. This is a great way to protect against spammers using fraudulent domain names.

This is why some major email providers like yahoo.com, gmail.com do reverse DNS lookups before accepting incoming emails.

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What do you have to do?

Before you outset this guide, make sure you have the following: Access to your computer’s console (optional)!

System 1 – Check PTR with nslookup or mining

All operating systems (Linux, MacOS) like Windows and Unix have built-in tools to check DNS records. If you are a Windows user, ensue the steps below:

Go to the Windows Start menu, write cmd and press ENTER;

You should now immediately see a black command;

Type the following command to get the hostname from the IP address (remember to change IP_ADDRESS to the actual IP address):

nslookup IP_ADDRESS

For example, if you were to check the PTR record for 54.243.154.xx, you would see a result like this:

C:\Users\Tom>nslookup 54.243.154.xxx Server: server1.yourisp.com Address: 121.91.3.xx Name: ec2-54-243-154-49.hostinger.com Place: 54.243.154.xx

As you can see, the PTR file is ec2-54-243-154-49.hostinger.com.

For Linux and Mac users, the process is similar;

On macOS, open Terminal from the launcher ( F4 ). Most Linux distributions allow you to effectively open a terminal by pressing the Ctrl + Alt + T keys together.

Use the following command to verify the record (remember to change IP_ADDRESS to the actual IP address):

dig -x IP_ADDRESS

For example, examining the PTR record for the IP address 54.243.154.xx shows:

dmins-Mac-mini:~ domantas$ dig -x 54.243.154.xx ; <<>> DiG 9.8.3-P1 <<>> -x 54.243.154.xx;; Global options: +cmd ;; Got the answer:;; ->>Header<<- opcode: QUERY, status: NOERROR, id: 26997 ;; Flag: qr rd ra; Questions: 1, Answers: 1, Authority: 0, Additional: 0;; Question category: ;xx.154.243.54.in-addr.arpa. in ptr ;; Answer category: xx.154.243.54.in-addr.arpa. 250 IN PTR ec2-54-243-154-49.hostinger.com;; Query time: 34 msec ;; Server: 351.91.3.242#53(151.91.3.242);; When: Fri Dec 30 11:38:29 2016 ;; MSG SIZE rcvd: 99

From the answer section, you can see that the PTR record is ec2-54-243-154-49.hostinger.com.

Method 2 – Using Online Tools

Another way to find hostnames from IP addresses is to use an online reverse lookup tool like MxToolBox. All you need to do is enter the IP address in the field and press the reverse lookup button.

Extra tip

Unfortunately, if the search shows that the record is not set for an IP address, you will need to contact your hosting provider or ISP to request that one be created. However, you now know what a PTR record is and how to check if an IP address exists. If you experience DNS errors and error returns when trying to send email, this is useful: it will help you troubleshoot the problem.

The final word

In this article, we have tried to tell you how to find your IP through records. Monovm is at your side in all seasons of the year and is made to replay questions about technical issues and data center and system upgrades. If you have experience in this field, don’t forget to contact us to join our group of friends.

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