Question : Multiple whois question

Hello experts.  i have many domains for my company that i need to check the details of.  i have written a small script that displays the information but as soon as it gets through 50 or not sure i get blocked.  i have tried few different services and they all seem to have limit.  i understand this is to prevent harvest but how do i do this legitimate.  i need to check information for many many hundreds and it is an ongoing script that need to be running.  paying for a service ok as long as cheap.  thankyou for any help you can suggest.  Cee

Answer : Multiple whois question

Contact some of registrars and aks for availability, protocol and prices.
I use such one, but i'm in PL, so will not help You with Your local market.