We can solve the problem of unable to access psn by modifying DNS. We can change the DNS to168.126.64.1or 168. 126.64.2, or even to Google's DNS 8. 8. 8. 8. 8, in Settings → First of all, you can try to contact the network service provider and ask them to change the IP pool from the intranet to the extranet. Sometimes the person who answers the phone won't understand you. You can transfer them directly to the technical department.

To change DNS, you can choose DNS as follows: The most commonly used server is Google: 8.8.8.8, Korean Chang 'an University DNS in 8.8.4.4,168.126.63.1,168.438+026.63.2.

DNS of Chunghwa Telecom in Taiwan Province Province, 168.95. 1 92.168.95.1,Norton's public DNS,198.50000.00000000065