Who is authoritative for reverse dns

Let's see how to do this with two different tools. In our first example, we are using the host binary. Simply open the Terminal app, type "host IP" and hit Enter. Let's see how it looks if we use the previous Yahoo IP:. Another tool we can use for this is Dig. Start by opening your Terminal and follow our example, we will use the same IP to check if it returns the same rDNS as the "host" tool:.

To perform a reverse DNS lookup query on Windows, we are going to use a tool called nslookup. To do this, open the Windows Menu and type cmd in the search box, this should return the cmd. In our example below, we are doing this with the previous IP:. In the following example, we can see the authoritative servers of IP If you have a website or have purchased a hosting server and want to configure a PTR record, first perform a query like the previous one for your IP. It will point back at your hosting provider, so in that case, you will have to talk to them to set up the PTR record for you.

But if the IP actually belongs to you, meaning that you are the authoritative server, then the steps are a bit more tricky than simply getting in touch with someone else. To make things clear, let's use IP On the DNS editor of the authoritative server, create a reverse zone, but be careful because the hostname requires and specific format.

Here are the latest Insider stories. More Insider Sign Out. Sign In Register. Sign Out Sign In Register. Latest Insider. Check out the latest Insider stories here. More from the IDG Network. Gone with the WINS. Spamhaus attacks expose huge open DNS server dangers. For more information about configuring a delegation for a reverse-mapping zone, see Configuring a Delegation.

Note: Before enabling RFC support for zones, disable forwarders for the zone, especially when any sort of delegation including RFC is being used. If you do not, reverse lookups may fail. All rights reserved. Required: page refresh 5. Page tree. Browse pages. Workflow Info Remove Read Confirmation. A t tachments 0 Page History People who can view. Page Labels Attachment Labels. Hide Inline Comments. Skip to end of banner. Jira links Read Confirmation. Go to start of metadata.

Collapse all Expand all Collapse all. Specify the following zone information: Enter one of the following to identify the zone: IPv4 Network: Enter the IPv4 address for the address space for which you want to define the reverse-mapping zone and select a netmask from the Netmask drop-down list.

To use an RFC prefix, select a netmask value that is between 25 to 31, inclusive. Enter a prefix in the text field.