diff --git a/packages/@aws-cdk/aws-ecs-patterns/test/ec2/test.l3s.ts b/packages/@aws-cdk/aws-ecs-patterns/test/ec2/test.l3s.ts
index 17693856ed8fd..09f786c2ea760 100644
--- a/packages/@aws-cdk/aws-ecs-patterns/test/ec2/test.l3s.ts
+++ b/packages/@aws-cdk/aws-ecs-patterns/test/ec2/test.l3s.ts
@@ -436,7 +436,7 @@ export = {
       Type: 'A',
       AliasTarget: {
         HostedZoneId: { 'Fn::GetAtt': ['ServiceLBE9A1ADBC', 'CanonicalHostedZoneID'] },
-        DNSName: { 'Fn::GetAtt': ['ServiceLBE9A1ADBC', 'DNSName'] },
+        DNSName: { 'Fn::Join': ['', [ 'dualstack.', { 'Fn::GetAtt': ['ServiceLBE9A1ADBC', 'DNSName'] } ] ] },
       },
     }));
 
@@ -501,7 +501,7 @@ export = {
       Type: 'A',
       AliasTarget: {
         HostedZoneId: { 'Fn::GetAtt': ['ServiceLBE9A1ADBC', 'CanonicalHostedZoneID'] },
-        DNSName: { 'Fn::GetAtt': ['ServiceLBE9A1ADBC', 'DNSName'] },
+        DNSName: { 'Fn::Join': [ '', [ 'dualstack.', { 'Fn::GetAtt': ['ServiceLBE9A1ADBC', 'DNSName'] } ] ] },
       },
     }));
 
diff --git a/packages/@aws-cdk/aws-ecs-patterns/test/fargate/integ.load-balanced-fargate-service.expected.json b/packages/@aws-cdk/aws-ecs-patterns/test/fargate/integ.load-balanced-fargate-service.expected.json
index 3f560edd9c37a..e7434c8e2eafc 100644
--- a/packages/@aws-cdk/aws-ecs-patterns/test/fargate/integ.load-balanced-fargate-service.expected.json
+++ b/packages/@aws-cdk/aws-ecs-patterns/test/fargate/integ.load-balanced-fargate-service.expected.json
@@ -618,9 +618,18 @@
         "Type": "A",
         "AliasTarget": {
           "DNSName": {
-            "Fn::GetAtt": [
-              "myServiceLB168895E1",
-              "DNSName"
+            "Fn::Join":
+            [
+              "",
+              [
+                "dualstack.",
+                {
+                  "Fn::GetAtt": [
+                    "myServiceLB168895E1",
+                    "DNSName"
+                  ]
+                }
+              ]
             ]
           },
           "HostedZoneId": {
diff --git a/packages/@aws-cdk/aws-route53-targets/README.md b/packages/@aws-cdk/aws-route53-targets/README.md
index e3e8f99a0e5ba..3bd36f68ba46f 100644
--- a/packages/@aws-cdk/aws-route53-targets/README.md
+++ b/packages/@aws-cdk/aws-route53-targets/README.md
@@ -13,7 +13,7 @@ This library contains Route53 Alias Record targets for:
   new route53.ARecord(this, 'AliasRecord', {
     zone,
     target: route53.RecordTarget.fromAlias(new alias.ApiGateway(restApi)),
-    // or - route53.RecordTarget.fromAlias(new alias.ApiGatewayDomainName(domainName)),
+    // or - route53.RecordTarget.fromAlias(new alias.ApiGatewayDomain(domainName)),
   });
   ```
 * CloudFront distributions
@@ -28,7 +28,7 @@ This library contains Route53 Alias Record targets for:
   new route53.ARecord(this, 'AliasRecord', {
     zone,
     target: route53.RecordTarget.fromAlias(new alias.LoadBalancerTarget(elbv2)),
-    // or - route53.RecordTarget.fromAlias(new alias.ApiGatewayDomainName(domainName)),
+    // or - route53.RecordTarget.fromAlias(new alias.ApiGatewayDomain(domainName)),
   });
   ```
 * Classic load balancers
@@ -36,9 +36,14 @@ This library contains Route53 Alias Record targets for:
   new route53.ARecord(this, 'AliasRecord', {
     zone,
     target: route53.RecordTarget.fromAlias(new alias.ClassicLoadBalancerTarget(elb)),
-    // or - route53.RecordTarget.fromAlias(new alias.ApiGatewayDomainName(domainName)),
+    // or - route53.RecordTarget.fromAlias(new alias.ApiGatewayDomain(domainName)),
   });
   ```
+
+**Important:** Based on [AWS documentation](https://aws.amazon.com/de/premiumsupport/knowledge-center/alias-resource-record-set-route53-cli/), all alias record in Route 53 that points to a Elastic Load Balancer will always include *dualstack* for the DNSName to resolve IPv4/IPv6 addresses (without *dualstack* IPv6 will not resolve).
+
+For example, if the Amazon-provided DNS for the load balancer is `ALB-xxxxxxx.us-west-2.elb.amazonaws.com`, CDK will create alias target in Route 53 will be `dualstack.ALB-xxxxxxx.us-west-2.elb.amazonaws.com`.
+
 * InterfaceVpcEndpoints
 
 **Important:** Based on the CFN docs for VPCEndpoints - [see here](attrDnsEntries) - the attributes returned for DnsEntries in CloudFormation is a combination of the hosted zone ID and the DNS name. The entries are ordered as follows: regional public DNS, zonal public DNS, private DNS, and wildcard DNS. This order is not enforced for AWS Marketplace services, and therefore this CDK construct is ONLY guaranteed to work with non-marketplace services.
diff --git a/packages/@aws-cdk/aws-route53-targets/lib/classic-load-balancer-target.ts b/packages/@aws-cdk/aws-route53-targets/lib/classic-load-balancer-target.ts
index 076c390e8f704..8b25fbe4f331e 100644
--- a/packages/@aws-cdk/aws-route53-targets/lib/classic-load-balancer-target.ts
+++ b/packages/@aws-cdk/aws-route53-targets/lib/classic-load-balancer-target.ts
@@ -11,7 +11,7 @@ export class ClassicLoadBalancerTarget implements route53.IAliasRecordTarget {
   public bind(_record: route53.IRecordSet): route53.AliasRecordTargetConfig {
     return {
       hostedZoneId: this.loadBalancer.loadBalancerCanonicalHostedZoneNameId,
-      dnsName: this.loadBalancer.loadBalancerDnsName,
+      dnsName: `dualstack.${this.loadBalancer.loadBalancerDnsName}`,
     };
   }
 }
diff --git a/packages/@aws-cdk/aws-route53-targets/lib/load-balancer-target.ts b/packages/@aws-cdk/aws-route53-targets/lib/load-balancer-target.ts
index c8902b98c0daa..d398256c57f8b 100644
--- a/packages/@aws-cdk/aws-route53-targets/lib/load-balancer-target.ts
+++ b/packages/@aws-cdk/aws-route53-targets/lib/load-balancer-target.ts
@@ -11,7 +11,7 @@ export class LoadBalancerTarget implements route53.IAliasRecordTarget {
   public bind(_record: route53.IRecordSet): route53.AliasRecordTargetConfig {
     return {
       hostedZoneId: this.loadBalancer.loadBalancerCanonicalHostedZoneId,
-      dnsName: this.loadBalancer.loadBalancerDnsName,
+      dnsName: `dualstack.${this.loadBalancer.loadBalancerDnsName}`,
     };
   }
 }
diff --git a/packages/@aws-cdk/aws-route53-targets/test/classic-load-balancer-target.test.ts b/packages/@aws-cdk/aws-route53-targets/test/classic-load-balancer-target.test.ts
index 6aea222305741..59e9326e7b23e 100644
--- a/packages/@aws-cdk/aws-route53-targets/test/classic-load-balancer-target.test.ts
+++ b/packages/@aws-cdk/aws-route53-targets/test/classic-load-balancer-target.test.ts
@@ -28,7 +28,7 @@ test('use classic ELB as record target', () => {
   // THEN
   expect(stack).toHaveResource('AWS::Route53::RecordSet', {
     AliasTarget: {
-      DNSName: { 'Fn::GetAtt': [ 'LB8A12904C', 'DNSName' ] },
+      DNSName: { 'Fn::Join': [ '', [ 'dualstack.', { 'Fn::GetAtt': [ 'LB8A12904C', 'DNSName' ] } ] ] },
       HostedZoneId: { 'Fn::GetAtt': [ 'LB8A12904C', 'CanonicalHostedZoneNameID' ] },
     },
   });
diff --git a/packages/@aws-cdk/aws-route53-targets/test/integ.alb-alias-target.expected.json b/packages/@aws-cdk/aws-route53-targets/test/integ.alb-alias-target.expected.json
index 828c0d7f4b6a5..746f62cc9acc7 100644
--- a/packages/@aws-cdk/aws-route53-targets/test/integ.alb-alias-target.expected.json
+++ b/packages/@aws-cdk/aws-route53-targets/test/integ.alb-alias-target.expected.json
@@ -413,9 +413,17 @@
         "Type": "A",
         "AliasTarget": {
           "DNSName": {
-            "Fn::GetAtt": [
-              "LB8A12904C",
-              "DNSName"
+            "Fn::Join": [
+              "",
+              [
+                "dualstack.",
+                {
+                  "Fn::GetAtt": [
+                    "LB8A12904C",
+                    "DNSName"
+                  ]
+                }
+              ]
             ]
           },
           "HostedZoneId": {
diff --git a/packages/@aws-cdk/aws-route53-targets/test/load-balancer-target.test.ts b/packages/@aws-cdk/aws-route53-targets/test/load-balancer-target.test.ts
index 50ff50a1a122e..396d2d457bb85 100644
--- a/packages/@aws-cdk/aws-route53-targets/test/load-balancer-target.test.ts
+++ b/packages/@aws-cdk/aws-route53-targets/test/load-balancer-target.test.ts
@@ -28,7 +28,7 @@ test('use ALB as record target', () => {
   // THEN
   expect(stack).toHaveResource('AWS::Route53::RecordSet', {
     AliasTarget: {
-      DNSName: { 'Fn::GetAtt': [ 'LB8A12904C', 'DNSName' ] },
+      DNSName: { 'Fn::Join': [ '', [ 'dualstack.', { 'Fn::GetAtt': [ 'LB8A12904C', 'DNSName' ] } ] ] },
       HostedZoneId: { 'Fn::GetAtt': [ 'LB8A12904C', 'CanonicalHostedZoneID' ] },
     },
   });