Using the Lookup tool

This is a debugging tool that lets you query your Internet domain name system (DNS) server for information about a domain and its registered hosts. Lookup can show you what happens when an application on your network uses your DNS server to find the address of a remote host.

To use the Lookup Tool:

1. Enter or select the appropriate information:
   • Address/Host name. Enter the host name or IP address of the device you want to trace the route to.
   • Lookup Type. Select the lookup type from the drop-down list.

   Note: The available list options vary depending on the DNS Server option that is selected (Stack, Default, or Custom).

   • A. Look up the host's Internet address from the hostname.
   • AAAA. Look up for the host IPv6 address from a hostname.
   • All. Display all available information about the host.
   • CNAME. Display alias names for the host.
   • HINFO. Display the CPU type and operating system type of the host.
   • MX. Display the hostname of the mail exchanger for the domain.
   • NS. Display the hostnames of name servers for the named zone.
   • PTR. Look up the hostname from the Internet address.
   • SOA. Display the domain's Start of Authority information, which indicates the primary name server for the domain and additional administrative information.
   • SRV. Look up any SRV record configured on this DNS server. SRV records specify the location of services on the network.
   • TXT. Look up any arbitrary text information the DNS server may have for this domain name or host.
   • ZONE. Display the zone listing for the domain. The zone listing describes the domains for which the name server is the primary name server) and lists all registered hosts in the domain.
   • Timeout. Enter the amount of time (in milliseconds) for the tool to wait on a response from the device. The Trace Route fails if this time limit is exceeded.
   • DNS Server. Select the method of the look up:
     • Stack. Use the OS TCP/IP stack look up routines.
     • Default. Use the default DNS server configured on the computer WhatsUp Gold is running on.
   • Custom. Query a custom DNS server. You must then enter the hostname or IP address of the domain name server you want to use.
2. Click Lookup to run the tool.

See Also Using Network Tools Using the Ping tool Using the Traceroute tool Using the Telnet tool Using the SNMP MIB Walker Using the SNMP MIB Explorer Using the MAC Address tool Using the Web Performance Monitor Using the Web Task Manager Using Layer 2 Trace Using IP/MAC Address Finder