Stop. Have a coffee. Step back and plan
Start with the domain you are using as the nameservesr on client domains
is it registered, and who with
are the nameservers used on the domain correct
is the zone for that domain on those namesrevers correct, update it so it has a new serail
does that zone have teh ns1 & ns2 A records - are they correct
are the ns1/ns2 nameservers registered and correct
- be methodical ...