Name Server Lookup

nslookup>

Determine the authoritative name servers for a name

​> set q=ns​> name​

Change to the authoritative name server

​> server newns​

Look up the IP address for a name

​> set q=a​> name​

Look up the name for an IP address

​> set q=ptr​> ipaddr​

nslookup hostname​nslookup​EZB3042I > ls domain.com​​EZB3042I > set q=ns​EZB3042I > ​hostname​​EZB3112I Authoritative answers can be found from:​​EZB3143I  ns1.domain.com internet address = nnn.nnn.nnn.nnn ​​EZB3143I  ns2.domain.com internet address = nnn.nnn.nnn.nnn ​​EZB3042I > server ns1.domain.com​​EZB3042I > set q=a​EZB3042I > ​hostname​​EZB3042I > set q=ptr​EZB3042I > ​ipaddr​

ls lists all of the names in the given domain. set q=ns sets the query type to allow determining the authoritative name server for a given host name. server can be used to set the default server being queried to an authoritative name server, or any other name server. set q=a sets the query type to return the IP address for a given host name. set q=ptr sets the query type to do a reverse lookup, which returns the host name for a given IP addrses.

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Grope for domain information with DIG

dig hostname​

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