If you have your App’s Keystore file and if you know the password, then it’s easy to figure this out. Open your Command Prompt or Terminal, and type this:
keytool -v -list -keystore .keystore
Here replace .keystore with the full location of your Keystore file with the proper name. For example, like:
Find the file address and use that. After this, enter your keystore password. That’s all. There you can find the “Alias name” easily. Let us know if you have any queries regarding this.