Is it necessary to update BaseUri for Rest EndPoints because of the move to Azure

Hello,

     I have written an application that makes RestAPI calls to a base URI (https://na1.docusign.net/restapi)

     I do have clients that need to whitelist all URLs from their servers.

     For the example above (na1.docusign.net/restapi), I will now need to have the client whitelist na1-b.docusign.net

     My question is:

               Does the base URI for the RestAPI calls remain na1.docusign.net.

      I assume that the base URI remains the same (na1.docusign.net/restapi).

      Thanks.