[arximboldi]

They switched me to CGNAT in my last speed upgrade, but I wrote to them about it and they moved me to native v4 straight away.

Their service is good on a technical level but they have the most aggressive and obnoxious sales reps. They scammed me twice with open lies on the phone (probably abusing also the fact that german is not my mother tongue) and had to fight for ages with their customer service later to get the issue resolved.

If you wanna go with them, buy on their website and hang up if anyone from 1und1 ever calls. They are official 1und1 reps and they will prove it you yet behave like scammers.

[hwj]

I can tell you that Deutsche Telekom has much much more aggressive sales reps than 1&1. (I've been with GMX/1&1 for ~15 years and with DT for ~2 years).

DT called me on phone over and over again, so much that I had to block them on my FritzBox. Several times they even knocked at my door.