This file contains a list of WHOIS servers which can augment or override
the built-in list of the client.
Its a plain text file in ASCII encoding. Each line consists of two fields:
a pattern to match WHOIS object identifier and a corresponding WHOIS server
Fields are separated by non-empty sequence of space or a tabular characters.
A line starting with a hash character is a free comment and its not
The pattern is case-insensitive extended regular expression if whois client
has been compiled with POSIX regular expressions support. Otherwise, simple
case-insensitive suffix comparison against WHOIS object identifier is used.
Internationalized domain names (IDN) must be specified in ascii-compatible
encoding (ACE) format.