This shows "inverse" or "reverse" resolution. This is only useful if the DNS domain administrator has bothered to create the relevant records and keep them up to date.Ī PTR query. This query reveals that is really .uk.Ī mail exchanger query, this time for the domain ser.ac.uk which reveals that mail sent to is actually sent to 134.220.1.12 which is really .uk. ![]() One of these is the canonical or reference name. Ser.ac.uk preference = 1, mail exchanger = ser.ac.ukĬ.uk CPU=SUN 690MP OS=Solaris 2.4ġ2.1. host name = .ukĪ simple query for the IP address corresponding to .uk.Ī given host can have several DNS names. In *nix bsed systems open the terminal window and type nslookup In windows just open the command prompt and type nslookup ![]() ![]() Non-interactive mode is used to print just the name and requested information for a host or do Interactive mode allows the user to query name servers for information about various hosts andĭomains or to print a list of hosts in a domain. Nslookup has two modes: interactive and non-interactive. Nslookup is a program to query Internet domain name servers.
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