You can now use Amazon Route 53, AWS's highly available and scalable DNS service, to easily manage association of Amazon VPCs and private hosted zones that you create with different AWS accounts with the same simplicity, security, and effectiveness that Route 53 already provides for VPC to Private Hosted Zone association. You can use the Route 53 Private DNS to manage authoritative DNS within your Virtual Private Clouds (VPCs), so you can use custom domain names for your internal AWS resources belonging to different accounts without exposing DNS data to the public Internet. This gives you greater leverage to manage your security and account pairing more effectively via self-service. Earlier this was only possible via engaging support.

Please see the Amazon Route 53 documentation for more detais.