Nameservers tell the internet which machine answers for your domain. Set wrong, the domain does not work at all: the website and the email go dark at the same moment. That is why this guide starts from the situation you are in.
If you registered the domain with us or transferred it to us, do not change nameservers by hand anywhere. Do it in your account and we will set the right nameservers for you.
We run two nameserver families, and your domain data always lives on one of them only. The names look interchangeable, but the wrong pair is not a slower option. It is a full outage. That is why the family is not a manual choice.
In this case you set the nameservers yourself at your current registrar:
ns1.nordweb.fi ns2.nordweb.fi
If you only have email or DNS management from us, contact support before changing anything. A zone has to be created for your domain first. Without it, pointing the nameservers to us takes the domain down.
When you transfer a domain to us, we take a snapshot of your previous provider's data at the moment of the transfer request and copy the A, AAAA, CNAME, MX and SPF records as they are. Your site and your mail keep working where they are, and you do not have to type the records again.
If the DNS editor in your account says the records are not managed on our nameservers, the domain points to the wrong place. Do not try the change again. Contact support and we will fix it for you.
If you use Nordweb Email, check the MX record in your account after the change. A new zone gets the hosting email MX record by default, which means outgoing mail works but incoming mail goes to the wrong machine.
Allow 1 to 48 hours. For fi domains the change is recorded in the registry immediately and the fi root publishes it within a few hours. The rest is determined by the lifetime of the old records, the TTL, which was set before the change and cannot be sped up afterwards.