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askmara - Man Page

do simple dns queries



askmara queries the user-specified dns server for records, and outputs the  reply in a csv2-compatible format (csv2 is the format of zone files  that maradns uses).


askmara [-n] [ -v | -t timeout] query [ server ]



If this is present, the following argument is the askmara timeout, in  seconds. Note that askmara can not both have a user-defined timeout and verbose output.


If this is set, askmara will verbosely output the complete reply that the server sent. Note  that this verbose output is not csv2-compatible.


If this is set, askmara, when sending out a query, will not request DNS recursion; in other  words, askmara will request that the remote DNS server not contact  other DNS servers to answer the query in question.


dns record to be queried. The query has two sections: The type of  record we desire, and the hostname we want this record for.

The type of query can have two forms: A one-letter mnemonic, or a  numeric rtype followed by a colon. This is immediately concatenated by  the full name of the host name we wish to look up.

For example, to ask for the IP of 'example.com.', we can use the  one-letter mnemonic, in the form 'Aexample.com.', or we can use  the numeric RR followed by a colon, giving the query  '1:example.com.' (since A has the record type of one). Note that  the query name needs the trailing dot at the end.

Askmara supports a handful one-letter mnemonics, as follows:

A signifies a request for an A (ipv4 address) RR

N signifies a NS RR

C signifies that we are asking for a CNAME RR

S signifies that we want a SOA RR

P signifies that we want a PTR RR

@ signifies that we mant a MX RR

T signifies that we want a TXT RR

Z signifies that we want to ask for all RRs.


IP address of the dns server to be queried. If no server is given,  askmara will query


Asking the server with the ip for the IP address of  example.com:

askmara Aexample.com.

Asking the server with the ip for the IP address of  example.com:

askmara Aexample.com.

Asking the server with the ip address for the IP address of  example.com, using the rr_number:query format:

askmara 1:example.com.

Asking the server with the ip address for a SRV record. In  particular, we ask for the "http over tcp" service for example.net.  Since askmara doesn't have a mnemonic for SRV record types, we use  the numeric code (33 for SRV):

askmara 33:_http._tcp.example.net.

Asking the server with the ip address for the AAAA (ipv6 ip)  record for example.net:

askmara 28:example.net.

Note that the output will be a raw DNS packet in the SRV example, but  askmara shows an IPv6 address (albeit without :: to collapse 0 quads)  in the AAAA example.


When askmara is asked for an SOA record, the output of askmara closely resembles the format of a csv2 file, but can not be parsed as a  csv2 file without modification.

askmara outputs multi-chunk ("character-string") TXT records  incorrectly (it only outputs the first chunk).

See Also




MaraDNS is written by Sam Trenholme. Jaakko Niemi used 5 minutes to  roll this manpage together, which Sam has subsequently revised.  


January 2002