I'm having the same issues which started randomly on the 6th. It happens every time I try to connect to a current data center or changing to another and on every single character once I do manage to get to the character select and either puts me back at the title screen or closes the game entirely. I am able to eventually to get into the game (takes about 10 minutes each time I logout to get back in)... I've also had 2 random 2002 disconnects while in game and playing normally.
PC user
2002, 90002, 10105 may be forgetting one
Wired- Charter Spectrum
Windows media/music player
Happens a lot because I switch between 6 characters on Excalibur/Sargatanas
I haven't tried anything since it started right as Make it Rain started and also the reports of DDoSs on PSN/Jpn servers. I thought they may have been related and that maybe it would go away if I just waited it out since I'm still able to play.