DNS Name Lookup

The DNS lookup tool returns the IPv4 and IPv6 IP address of a URL. If you enter an IPv4 and/or IPv6 IP address, the tool returns the domain name for that address. If you enter a domain name, the tool returns the DNS server used and the resolved address.

With the DNS Server radio buttons, you can select either a System or Customized DNS server. The options change, depending on which you choose.

The IPv4/IPv6 DNS Server fields display the IP addresses of the DNS Servers configured on the firewall. If there is no IP address (0.0.0.0 for IPv4 or :: for IPv6) in the fields, you must configure them on the Network > DNS page.

Under Find location of this URL, enter the URL and select, IPv4, IPv6, or All and click GO.

Resolving a System DNS Server

To resolve a system DNS Server

1. Select System for the DNS Server.



2. In the Find location of this URL field, enter either the domain name or the IP address.
3. Select the type of IP address from the drop‐down menu:
   • IPv4 (default)
   • IPv6
   • All (both IPv4 and IPv6)
4. Click GO. The firewall returns the matching pair of addresses and domain names.

When specifying a domain name, do not add http or https to the name.

Resolving a Customized DNS Server

To resolve a Customized DNS Server

1. Select Customized under DNS Server.

   

2. If the DNS Server IP address is not populated, enter it in the IPv4 or IPv6 field.

3. In the Find Location of this URL field, enter either the domain name or the IP address.

4. Select the type of IP address from the drop‐down menu:

   • IPv4 (default)

   • IPv6

   • All (both IPv4 and IPv6)

5. Click GO.