Hi @Ashutosh Sharma ,
please take a look here: https://learn.microsoft.com/en-us/azure/azure-sql/database/private-endpoint-overview#check-connectivity-using-sql-server-management-studio-ssms
Important:
Use the Fully Qualified Domain Name (FQDN) of the server in connection strings for your clients (<server>.database.windows.net).
Any login attempts made directly to the IP address or using the private link FQDN (<server>.privatelink.database.windows.net) shall fail.
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Regards
Andreas Baumgarten