Thank you creeking. Below is more info.
is the development company using their own custom nameservers for the domain?
No, they do not use their own nameservers, nameservers are from a worldwide well known Registrar and hosting provider
would they be willing to change nameservers for that domain before transferring ownership?
I believe they would be willing to do what we ask, yes. But I am wondering whether they have misunderstood what the client wants as they are mentioning hosting change.
The client does not want hosting change right now - they are happy to remain hosted where they are now, at least for the next few months. But what the client wants is for the domain ownership to be returned to them and the client wants to use registrar in their own country.
The development company is mentioning DNS MX and DNS A-Records saying that they are pointing to IP addresses of their own server poll they have with (worldwide known) hosting provider. They say that if they change nameserver, they will lose direct control over DNS Records which at worst case will take website offline and at the best case there would be connectivity issues which would not allow them to honour their uptime agreement.
They want the client to sign the paper acknowledging the uptime risk.
But to my understanding - there is no reason for the development company to change the IP of the server. From my experience with domanis I have, the same IP has been used for ages (often years). Or am I wrong about it?
My knowledge here is very limited so I cannot even judge if this is all correct or if so, how likely it is that there will be uptime problems or site down problems. I cannot even judge whether they are trying to scare the client or is it correct what they are saying?