We have quite a couple of domains where the rightful owner is us, but the nameserver is managed by a third party (subcontractor), who doesn't allow us to change the zone files.
Thus, we are moving to our new nameservers, which we can manage on our own, namely DigitalOcean's free DNS service.
Is it possible and if yes, what disadvantages would it bring if instead of requesting the nameserver change at the registrar for DO's nameservers, I would request a change for
ns1.example.com, then I'd create a
CNAME record that
ns1.example.com points to
ns1.digitalocean.com? Would that work?
In that case, if we ever have to move our DNS service from DigitalOcean to some other service, the registrar wouldn't need to change a hundred domains at once with all the administrative hassle, we could simply modify the abovementioned