- Add zone file to your primary name server that will serve as a hidden master
- Ensure that your hidden master is not mentioned in the NS records of your zone file, as only your public name servers (such as UltraDNS) should be listed there
- Whitelist UltraDNS AXFR IP's
- Create a secondary domain in one of the following ways using your hidden master as the primary name server
- Ensure that UltraDNS servers have updated with your zone and resource records
- List your UltraDNS name servers as authoritative at your registrar but not your hidden master