elb.$REGION.amazonaws.com

[load-balancer-name]-[random-string].elb.[region].amazonaws.com

See also

• amazonaws.com, clientvpn.REGION.amazonaws.com, efs.REGION.amazonaws.com, quicksight.amazonaws.com, metrics.eks.amazonaws.com, cognito-identity.amazonaws.com, sns.amazonaws.com, ecs.amazonaws.com, ecs-tasks.amazonaws.com, codeartifact.amazonaws.com, autoscaling.amazonaws.com
• Amazon Elastic Load Balancer: ALB (Target group), Classic, Amazon Elastic Load Balancer (ELB), Amazon Gateway Load Balancers (GWLB)