Amazon Route 53 Launches New API Action to list Private Hosted Zones associated with your Amazon VPCs
Beginning today, you can identify which Private Hosted Zones are associated with your VPCs by calling the new ListHostedZonesByVPC API action. This API action gives you better visibility into the associations between Private Hosted Zones and VPCs across your organization. For example, you can now easily identify all Private Hosted Zones associated with your VPC, even if those Private Hosted Zones were created by other AWS accounts.
Source:: Amazon AWS