nslookup

This command queries the Domain Name System (DNS) to obtain domain name mapping or IP address mapping, using the name server look up tool.

Syntax

nslookup <Hostname> {force|source|type}

Command	Description
Hostname	Defines the host name.
force	Enables the device to use the default DNS servers (primary and secondary) for nslookup. It only uses the default DNS servers when all other DNS servers fail as described in chronological order: 1. The device uses the DNS server configured for the associated IP Interface. 2. If no DNS server was configured for the associated IP Interface or no IP Interface was associated, the device uses the DNS server configured for the default OAMP IP Interface. 3. If no DNS server was configured for the OAMP IP interface, only then does the device uses the default DNS servers.
source voip interface {name|vlan} {force|type}	(Optional) Defines an IP interface name or VLAN ID (1 -3999).
type {a|aaaa|cname |naptr|srv}	(Optional) Defines the type of DNS query.

Note

The DNS server must be configured for this command to function. The DNS server can be configured using:

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Internal DNS table: configure network > dns dns-to-ip

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Internal SRV table: configure network > dns srv2ip

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IP Interfaces table: configure network > interface network-if

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Default DNS servers: configure network > dns settings > dns-default-primary-server-ip

Command Mode

Basic and Privileged User

Example

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This example looks up the IP address of Google:

nslookup google.com
google.com resolved to 216.58.213.174