Allowed Callback URL for the tenant in US-4 region

Hi,

I was trying to set up a SSO Dashboard SPA App in my Auth0 tenant referring to this document: Create Single Sign-on (SSO) Dashboard Application. My tenant is in US-4 region. I could not find an allowed callback URL for the region where my tenant is hosted in that document. Can someone me with the allowed callback URL for US-4 region?