@Ward, Paul (P0206AE) Thanks for reaching out. g31-prod-bn3-005-sb.servicebus.windows.net is not an instance name, prod-bn3-005 is a scale unit where the instance is hosted with this it's not possible to identify the resource owner, we would need the service Bus namespace name to investigate further.
do let me know incase of further queries, I would be happy to assist you.