The WHOIS service is provided solely to allow users to obtain information
It is permitted to use the WHOIS service only for technical or administrative requirements associated with the operation of the Internet or in order to contact the domain name holder over legal problems.
You will not use information obtained using WHOIS:
To allow, enable or in any other way to support sending of unsolicited mails (spam)
for any kind of advertising
to disrupt Internet stability and security
It is not permitted to obtain (including copying) or re-use in any form or by any means all or quantitatively or qualitatively significant part of the WHOIS service without NIC’s express permission.