Forward / Reverse Domain Name System (DNS)

For a PDF version of the PNCP DNS Management User Guide, please use the link below.


What is the difference?

Forward DNS
A forward DNS lookup will, when supplied with a domain name (for example google.com), return the IP address for the supplied domain. When you access Google, a DNS server is looking in its forward lookup zone for the IP address(es) of the site, and then returning them to you. This type of record is an A record, and is the most common one. A forward DNS lookup can contain other records, such as MX, C-Name, etc.

Reverse DNS
A reverse DNS lookup is used to lookup the domain name for a supplied IP address. You normally supply the IP address backwards and append .in-addr.arpa (more info at http://en.wikipedia.org/wiki/.arpa). This can be a useful feature to anyone, but it is particularly practical for those running an outgoing mail server.

A good tool for finding rDNS or normal DNS records is dig.

How to reach the DNS screen?

  1. Sign in to the Client Portal.
  2. Open the Manage mega menu.
  3. Click Forward DNS / Reverse DNS under the Combined Functions heading.

How to add a domain name?

  1. Open the Forward DNS / Reverse DNS screen.
  2. Click Add Domain Name/s.
  3. Copy/paste or manually enter domain name/s (use a comma to separate multiple entries).
  4. When you are finished adding domain names, click Add.

    Note: Identical domain entries will be ignored.


All Domain Name Ownership must be verified! The names may not be published until this is completed. Find more information on this topic in the Domain Verification section of the help guide.


The Domain Name Listing offers the following information:

  1. Verified Status. This will show you if the domain has been verified or not.

    • Not Verified. The Verification process has not begun yet. Please begin the verification process by choosing Actions > Verify. A verification email will be sent to you, the domain owner. Alternatively, complete the process via DNS String. Update your TXT record with the string provided. Once complete, click the Actions > Verify link to complete process. Click Yes, I updated my Registrar.
    • Warning. This occurs after a domain has been verified for ownership and the system starts checking for NS entries at their registrar. If this fails, a warning status will appear. Update your NS entries to point to phoenixNAP's name servers. Once complete, click the Actions > Resolve link to complete the NS related entry process. Click Yes, I updated my Registrar.
    • Verified. The Verification process has been completed successfully and the NS records at your registrar have been updated to point to our name serves.
  2. Domain Name.
  3. Added On. Date of adding the domain.
  4. Manage. Click on the Actions icon to open a drop-down menu with the following options:

    • Modify. ONLY non-verified domain names can be modified. You can modify a domain name as desired. After modifying the name click Update to confirm your changes. Be aware that Modified Domain Names must go through the entire Verification Process again.
    • Resolve. Update your NS entries to point to phoenixNAP's name servers. Once complete, click the Actions > Resolve link to complete the NS related entry process. Click Yes, I updated my Registrar.
    • Delete. Deletes Domain Name as well as any Forward DNS / Reverse DNS records associated with it. You will be asked to confirm this action.
    • Verify. You can reset the verification process ONLY if domain ownership has not been verified yet.

 Sortable Columns

Verified Status, Domain Name, and Added On columns are sortable.


  1. Forward DNS Mappings
  2. Reverse DNS Mappings


Please be aware that DNS can be a confusing and complicated system. If you get something wrong, you might experience problems such as bouncing emails sent to your domain, or even cause your domain's website to malfunction. We recommend you use the DNS manager with caution, and ONLY if you understand basic concepts in DNS management.