Question - service_names in RAC/Exadata/Cloud having full domain name - can that be disabled somehow?

In RAC/Exadata/Cloud (and I'm not sure which is the cause), our service names always have the domain appended.

So the service_names for TNS end up being service_name.<domain>

Which, for a failover entry in TNS, makes the service names all very unique depending on where the failover/standby hosts are as those service_names will have a different domain.

Is there somewhere to have "short" service_names that don't include domain name when using srvctl to add the service?

Or is it the way we're adding the service_name that's allowing Oracle to setup the service with domain name?

Example the way we use it:

srvctl add service -d <db_name> -s <short_svc_name> -pdb <pdb_name> -preferred <preferred instance> -available <avail instance>

I'm wondering if we should use quotes around the service name on creation or something to get rid of the domain getting appended.

(I haven't searched this yet but will do so as well but wanted to ask here)

Thanks,
Chris