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Amazon Route 53 Resolver endpoints now support additional capabilities for IPv6 query traffic
Amazon Route 53 Resolver now supports DNS64 on inbound endpoints for IPv6-only clients and IPv6 forwarding on outbound endpoints, easing hybrid IPv4/IPv6 network communication on AWS.
What: As of May 7, 2026, Amazon Route 53 Resolver endpoints have new capabilities for IPv6 traffic. Inbound endpoints now support DNS64, allowing IPv6-only on-premises clients to communicate with IPv4 services on AWS by synthesizing AAAA (IPv6) records. Outbound endpoints can now forward DNS queries to public IPv6 name servers via the Internet Gateway (IGW).
Why it matters: This update significantly simplifies the transition to IPv6 in hybrid cloud environments, eliminating the need for complex workarounds when IPv6-only clients need to access IPv4 services or vice-versa, making AWS more robust for modern network architectures.
Takeaway: If your organization uses IPv6-only clients or is transitioning to IPv6 in a hybrid AWS environment, you can now configure Route 53 Resolver endpoints to handle DNS resolution between IPv6 and IPv4 services more seamlessly.
Decoder
- DNS64: A mechanism that synthesizes AAAA (IPv6) records for domains that only have A (IPv4) records, enabling IPv6-only clients to communicate with IPv4 services.
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