For the last month or so my Playstation 4 intermittently gives me the NW-31201-7 error code. This code alludes to cannot connect to the playstation network even though the network is most definitely up and running.
This happens on both a Belkin power lined ethernet connection and the Playstation in-built WiFi connection.
Once I test the connection it will get as far as internet connection test and fail or sometimes get to playstation network sign-in and fail.
As soon as I connect to the 4G hotspot on my Huawei phone it connects with no issues.
I have tried different DNS settings (18.104.22.168/22.214.171.124) and this can sometimes help but it seems like a red herring.
I am guessing you have a SH3. Do a search for PUMA 6 Test, post the results back here.
-- Red (VM SH2 AC Beta tester) Running on 1Gbps VM service with SH4 in Modem Mode, with a ASUS RT-AC5300 router. With this setup I get Fantastic WIRED and WIRELESS Signals in my home. I dont work for VM. But I work in IT, and I know my tech. My advice is at your own risk. If you are happy with my answers please press Kudo ?