What is the default namespace of Salesforce lightning component?

Hello Prachi,

If your organization hasn’t set a namespace prefix, use the default namespace c when referencing Lightning components that you’ve created.
The following items must use the c namespace when your organization doesn’t have a namespace prefix set.

• References to components that you’ve created
• References to events that you’ve defined

The following items use an implicit namespace for your organization and don’t require you to specify a namespace.

• References to custom objects
• References to custom fields on standard and custom objects
• References to Apex controllers

Hello,

If your organization hasn’t set a namespace prefix, use the default namespace c when referencing Lightning components that you’ve created.

Thanks.