To look up a handle, name, hostname, or other field, just type it in.  WHOIS
will do a very broad search on your input.  To narrow down the search or
change WHOIS' behavior, the following modifiers are accepted:

  "!" before the string looks for handles only.
  "." before the string looks for names only.
  "." after the string looks will match anything from that point.
  "@" within the field specifies a mailbox search
     username@  will look for mailboxes with the specified username.
     @host will look for mailboxes with the specified host.
     username@host will look for mailbox with specified username and host.

examples:
  Smith          [Looks for name or handle SMITH]
  !ES1           [Looks for handle ES1]
  .Eric          [Looks for first or last name ERIC]
  .Smith, Eric   [Looks for name Eric Smith]
  esmith@tybalt.caltech.edu
                 [Looks for mailbox esmith on host tybalt.caltech.edu]

To guarantee matching only a single record, look it up by its handle with a
handle-only search.  Within the whois database, all handles are unique.