...figuring out what to request specifically I reached out for my ISP and they luckily could provide me with everything I needed and even unlocked it within one hour only.
I used this telephone call to also upgrade my upload bandwidth to 50 Mbit/s, what should give me the opportunity to host some more traffic intense services on my home server and therefore don't need to outsource this to a #VPS.
It's strenuous but I am sure the resulting opportunities will be rewarding.