Open your account in NameCheap.
Go to the following location in your account.
https://ap.www.namecheap.com/domains/list/
Click on Manage.
Go to the Advanced DNS tab.
Click on Add Nameservers.
Add the ns1 and ns2 records for the given IP.
Note: Please do not forget to change 111.222.333.444
with your server’s given IP.
After adding ns1 and ns2 records do the following steps.
Change the Name Servers.
Go to the Domain tab and in the “NAMESERVER” section, select the custom DNS option, and adding the following records.
ns1.yourdomain.com
ns2.yourdomain.com
Note: Please do not forget to change yourdomain.com
with your actual domain name.