diff --git a/route53-zone-association/vpc/README.md b/route53-zone-association/vpc/README.md
index 5a3ff70..81a5cbe 100644
--- a/route53-zone-association/vpc/README.md
+++ b/route53-zone-association/vpc/README.md
@@ -64,4 +64,6 @@ No modules.
 
 ## Outputs
 
-No outputs.
+| Name | Description |
+|------|-------------|
+| <a name="output_zones"></a> [zones](#output\_zones) | Map of zone ids to zone names for PHZs |
diff --git a/route53-zone-association/vpc/main.tf b/route53-zone-association/vpc/main.tf
index c0642db..61bafdf 100644
--- a/route53-zone-association/vpc/main.tf
+++ b/route53-zone-association/vpc/main.tf
@@ -71,3 +71,8 @@ resource "aws_route53_zone_association" "peer_zones" {
 
   depends_on = [aws_route53_vpc_association_authorization.peer_zones]
 }
+
+output "zones" {
+  description = "Map of zone ids to zone names for PHZs"
+  value       = { for k, v in data.aws_route53_zone.zones : v.zone_id => k }
+}