It would be substantially more work to compile the list of names to be whois checked than it would be to paste the list into the software that does the bulk whois check.
What info do you give. Ther full whoisinfo per domain of a list ?
Or only "owner". or so ?
And also for .nl ,.be and .eu -domains ? (These extentions work with captcha for each domainname you enter to see the whois-info.