From the course: Managing DNS Essential Training

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Explore PTR records

Explore PTR records

From the course: Managing DNS Essential Training

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Explore PTR records

- [Voiceover] Before we get started talking about what a PTR record looks like when we create it, we have a lot of work to do, and I wanna just talk to you about this whole concept before we get started with that. A reverse lookup record, as I like to call it, but it's more formally called a pointer record, and it's labeled PTR, as a resource record. It's designed to map an IPv4 address to a host name. Now, because we use authority to determine who is allowed to create resource records in forward lookup's, or an A record related to a domain. It only makes sense that we would go to the owner of an IP address, or range of IP addresses to find authority for PTR records, right? After all, the PTR record points from an IP address to a name, which is the reverse of what happens in an A record or quad-a record. The first thing you have to do, to create an PTR, is to be authoritative for the IP address you're going to be referencing, which is perfectly appropriate on a private network like…

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