khost - Simple DNS lookup utility

       CZ.NIC Labs <https://www.knot-dns.cz>

       Copyright 2010–2025, CZ.NIC, z.s.p.o.

3.4.4                                              2025-01-22                                           KHOST(1)

       This  utility sends a DNS query for the name to the server and prints a reply in more user-readable form.
       For more advanced DNS queries use kdig instead.

   Parametersname   Is a domain name that is to be looked up. If the name is IPv4 or IPv6 address the PTR  query  type
              is used.

       server Is  a name or an address of the nameserver to send a query to.  The address can be specified using
              [address]:port notation. If no server is specified, the servers from /etc/resolv.conf are used.

       If no arguments are provided, khost prints a short help.

   Options-4     Use the IPv4 protocol only.

       -6     Use the IPv6 protocol only.

       -a     Send ANY query with verbose mode.

       -d     Enable debug messages.

       -h, --help
              Print the program help.

       -r     Disable recursion.

       -T     Use the TCP protocol.

       -v     Enable verbose output.

       -V, --version
              Print the program version. The option -VV makes the program print the compile  time  configuration
              summary.

       -w     Wait forever for the reply.

       -cclass
              Set the query class (e.g. CH, CLASS4). The default class is IN.

       -ttype
              Set the query type (e.g. NS, IXFR=12345, TYPE65535). The default is to send 3 queries (A, AAAA and
              MX).

       -Rretries
              The number (>=0) of UDP retries to query a nameserver. The default is 1.

       -Wwait
              The  time to wait for a reply in seconds. This timeout applies to each query try. The default is 2
              seconds.

       1. Get the A, AAAA and MX records for example.com:

             $ khost example.com

       2. Get the reverse record for address 192.0.2.1:

             $ khost 192.0.2.1

       3. Perform a verbose zone transfer for zone example.com:

             $ khost -t AXFR -v example.com

       Exit status of 0 means successful operation. Any other exit status indicates an error.

/etc/resolv.conf

       khost - Simple DNS lookup utility

kdig(1), knsupdate(1).

khost [options] name [server]