A quick way to check is to ping your Apex One as a Service (Apex Central) server FQDN. For example:
C:\ping abcdefcg.manage.trendmicro.com
Pinging abcdefcg.centralus.cloudapp.azure.com [xx.yy.zz.aa] with 32 bytes of data:
Request timed out.
This article provides information on how to determine the datacenter location of Apex One as a Service provisions.