Transferring a Phone Number Provided to Subscribers

There is a website for sharing information / Q&A / helping others / information about stores / activities, etc., which is freely accessible to everyone. Additionally, there is an option to subscribe for a monthly fee to receive the phone numbers of published ads. We do not have a subscription. Is it permissible to ask someone to check and give me the advertiser's number?

Hello 

According to the instructions of the Gaon, Rabbi Amram Fried, shlita, it is forbidden to give the numbers to those who are not subscribers. 

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