Between 6:32 AM and 1:35 PM PDT, customers experienced issues resolving newly created public EC2 instance names to private IPs within newly created VPCs in the US-EAST-1 Region. Creation of new Route 53 Resolver Endpoints was also delayed during this time. Newly created instances within existing VPCs resolved normally, and all other DNS functionality worked normally in all VPCs during this time. The issue has been resolved and all DNS queries are being answered normally.