diff --git a/tools/write-template-zone-file.cr b/tools/write-template-zone-file.cr
index a050e79..28950b0 100644
--- a/tools/write-template-zone-file.cr
+++ b/tools/write-template-zone-file.cr
@@ -21,14 +21,15 @@ zone = DSZ.new domain
 
 zone << DSZ::SOA.new  "#{domain}.", # name
   3600.to_u32,                      # TTL
-  "ns0.arn-fai.net.",               # Master Name Server for the zone
-  "dnsmaster.arn-fai.net.",         # admin email address
+  "ns0.#{domain}.",                 # Master Name Server for the zone
+  "dnsmaster.#{domain}.",           # admin email address
   2023070100.to_u64,                # serial
         3600.to_u64,                # refresh
          600.to_u64,                # retry
      2419200.to_u64,                # expire
          600.to_u64                 # minimum TTL
 
+# NS: name ttl target
 zone << DSZ::NS.new "#{domain}.", 3600.to_u32, "ns0.arn-fai.net."
 zone << DSZ::NS.new "#{domain}.", 3600.to_u32, "alsace.tetaneutral.net."