If you have completed setting your Fully Branded Name Servers and/or Control Panel Login URL, you can generally start using them within 24-48 hours. If you have followed all the instructions correctly, then when you ping your Branded Name Servers or visit your Control Panel Login URLs, you will be able to see results.
Instructions to set your Fully Branded Control Panel Login URLs
Do not be confused when you encounter errors such as No NS A records at nameservers while using some DNS Tools like DNSReport.com. This does not indicate an error and will not affect the resolution of your domain name or Name Server.