Quick Answer: What Is The Purpose Of A PTR Record?

What should my PTR record be?

PTR records are used for the Reverse DNS (Domain Name System) lookup.

Using the IP address you can get the associated domain/hostname.

An A record should exist for every PTR record.

The usage of a reverse DNS setup for a mail server is a good solution..

How do I reverse DNS?

Type in an IP address (for example 8.8. 8.8) and press enter and the tool will make a reverse DNS lookup and return the name record for that IP address.

How do I create a reverse DNS record for email server?

Select Servers, then click the link for your Cloud Server from your Servers List. On the Server Details screen, click Add Record next to the Reverse DNS. In the Add Record pop-up window: Enter your domain name (for example mail.example.com) in the Hostname field.

How long does it take for a PTR record to propagate?

24 hoursThe general rule is propagation takes 24 hours to complete worldwide. However, in some cases, this can take up to 48 hours, depending on DNS record TTLs.

What is A and AAAA record?

A and AAAA records are equally important when it comes to resolving DNS. The difference lies in that A records is used to resolve a hostname which corresponds to an IPv4 address, while AAAA records are used to resolve a domain name which corresponds to an IPv6 address.

How do I find my DNS PTR record?

How To Use NSLOOKUP to View Your DNS RecordsLaunch Windows Command Prompt by navigating to Start > Command Prompt or via Run > CMD.Type NSLOOKUP and hit Enter. … Set the DNS Record type you wish to lookup by typing set type=## where ## is the record type, then hit Enter. … Now enter the domain name you wish to query then hit Enter..More items…•

How do I check my PTR record with Dig?

4. Reverse DNS Lookup. We can use the dig command to perform a reverse DNS lookup, that is we can query an IP address and find the domain name that it points to by querying the PTR record. This is done by using the -x option followed by the IP address to query.

What is an A record?

A Records. A Records are the most basic type of DNS record and are used to point a domain or subdomain to an IP address. Assigning a value to an A record is as simple as providing your DNS management panel with an IP address to where the domain or subdomain should point and a TTL.

Do I need a PTR record for email?

You need a PTR record because many mail servers will reject email that comes from a mail server without one.

What is an A record domain?

A Records. A Records are the most basic type of DNS record and are used to point a domain or subdomain to an IP address. Assigning a value to an A record is as simple as providing your DNS management panel with an IP address to where the domain or subdomain should point and a TTL.

Where do I put PTR record?

Adding a PTR record to an IPv4 addressIn the menu bar, go to section “Dedicated & Bare Metal” and select “All servers”.The overview of Dedicated & Bare Metal servers is displayed.Click the IP address for the server hosting pack to which you want to add the PTR record.More items…

What does PTR stand for?

PTRAcronymDefinitionPTRPupil/Teacher RatioPTRPublic Test Realm (gaming, World of Warcraft)PTRProton Transfer ReactionPTRPersonal Tax Return64 more rows

Can you speed up DNS propagation?

However, there is a simple way to speed up DNS propagation: Define or modify an A record that points your hostname to the new destination IP address. Set a minimal TTL for that DNS record—we recommend 5 minutes. Below that, many ISPs might ignore the TTL and retain the old record in cache.

Why PTR record is created in DNS?

A PTR record (Pointer Record) connects an IP address to a host name. A PTR record is therefore sometimes called Reverse DNS Record because it converts an IP address into a name. A PTR record can only be created on the nameservers managed by the owner of the IP address, and is only valid for static IP addresses.

How does a PTR record work?

While the main purpose of the Domain Name System is to point domains to IP addresses, a PTR record works in the opposite way – it associates an IP with a domain name. Because of its purpose, a PTR record is sometimes called Reverse DNS Record. … One PTR record can be configured per IP, linking that IP to a single domain.

How do I create a PTR record?

To create the PTR Record:Add a new PTR record. … For the Canonical Hostname, enter the domain you’d like the IP address to resolve. … After you’ve saved your file zone, allow time for the change before validating the new reverse DNS record.

What is a PTR request?

A Pointer record (PTR) resolves an IP address to a fully-qualified domain name (FQDN) as an opposite to what A record does. PTR records are also called Reverse DNS records.