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whois -t TYPE
whois -v TYPE
whois -q keyword
This version of the whois client tries to guess the right server to ask for the specified object. If no guess can be made it will connect to whois.networksolutions.com for NIC handles or whois.arin.net for IPv4 addresses and network names.
When querying whois.arin.net for IPv4 or IPv6 networks, the CIDR netmask length will be automatically removed from the query string.
When querying whois.nic.ad.jp for AS numbers, the program will automatically convert the request in the appropriate format, inserting a space after the string AS.
When querying whois.denic.de for domain names and no other flags have been specified, the program will automatically add the flag -T dn.
When querying whois.dk-hostmaster.dk for domain names and no other flags have been specified, the program will automatically add the flag --show-handles.
RIPE-specific command line options are ignored when querying non-RIPE servers. This may or may not be the behaviour intended by the user. When querying a non-standard server, command line options which are not to be interpreted by the client should always follow the -- separator (which marks the beginning of the query string).
If the /etc/whois.conf config file exists, it will be consulted to find a server before applying the normal rules. Each line of the file should contain a regular expression to be matched against the query text and the whois server to use, separated by white space.
The whois protocol does not specify an encoding for characters which cannot be represented by ASCII and implementations vary wildly. If the program knows that a specific server uses a certain encoding, if needed it will transcode the server output to the encoding specified by the current system locale.
Command line arguments will always be interpreted accordingly to the current system locale and converted to the IDN ASCII Compatible Encoding.
RIPE-223: RIPE NCC Database Documentation
Detailed help on available flags can be found in RIPE-223 or in the help file which can be obtained with the command: