The Pakistan Telecommunication Authority (PTA) has started the second trial of blocking unregistered VPNs through the firewall. According to sources, this trial of blocking will last two days while the practice of blocking unregistered VPNs will be conducted during the trial. PTA has given a deadline of November 30 for the registration of all unregistered VPNs. Regular blocking of unregistered VPNs will begin from December 1st. So far, more than 25000 VPNs have been registered.