diff --git a/README.md b/README.md
index 2c8e8623..ee0b31f5 100644
--- a/README.md
+++ b/README.md
@@ -488,7 +488,7 @@ Available targets:
 | <a name="input_timeouts_configuration"></a> [timeouts\_configuration](#input\_timeouts\_configuration) | List of timeout values per action. Only valid actions are `create`, `update` and `delete` | <pre>list(object({<br>    create = string<br>    update = string<br>    delete = string<br>  }))</pre> | `[]` | no |
 | <a name="input_vpc_id"></a> [vpc\_id](#input\_vpc\_id) | VPC ID to create the cluster in (e.g. `vpc-a22222ee`) | `string` | n/a | yes |
 | <a name="input_vpc_security_group_ids"></a> [vpc\_security\_group\_ids](#input\_vpc\_security\_group\_ids) | Additional security group IDs to apply to the cluster, in addition to the provisioned default security group with ingress traffic from existing CIDR blocks and existing security groups | `list(string)` | `[]` | no |
-| <a name="input_zone_id"></a> [zone\_id](#input\_zone\_id) | Route53 parent zone ID. If provided (not empty), the module will create sub-domain DNS records for the DB master and replicas | `string` | `""` | no |
+| <a name="input_zone_id"></a> [zone\_id](#input\_zone\_id) | Route53 DNS Zone ID as list of string (0 or 1 items). If empty, no custom DNS name will be published.<br>If the list contains a single Zone ID, a custom DNS name will be pulished in that zone.<br>Can also be a plain string, but that use is DEPRECATED because of Terraform issues. | `any` | `[]` | no |
 
 ## Outputs
 
diff --git a/docs/terraform.md b/docs/terraform.md
index 61a64c8a..4b9eae6a 100644
--- a/docs/terraform.md
+++ b/docs/terraform.md
@@ -136,7 +136,7 @@
 | <a name="input_timeouts_configuration"></a> [timeouts\_configuration](#input\_timeouts\_configuration) | List of timeout values per action. Only valid actions are `create`, `update` and `delete` | <pre>list(object({<br>    create = string<br>    update = string<br>    delete = string<br>  }))</pre> | `[]` | no |
 | <a name="input_vpc_id"></a> [vpc\_id](#input\_vpc\_id) | VPC ID to create the cluster in (e.g. `vpc-a22222ee`) | `string` | n/a | yes |
 | <a name="input_vpc_security_group_ids"></a> [vpc\_security\_group\_ids](#input\_vpc\_security\_group\_ids) | Additional security group IDs to apply to the cluster, in addition to the provisioned default security group with ingress traffic from existing CIDR blocks and existing security groups | `list(string)` | `[]` | no |
-| <a name="input_zone_id"></a> [zone\_id](#input\_zone\_id) | Route53 parent zone ID. If provided (not empty), the module will create sub-domain DNS records for the DB master and replicas | `string` | `""` | no |
+| <a name="input_zone_id"></a> [zone\_id](#input\_zone\_id) | Route53 DNS Zone ID as list of string (0 or 1 items). If empty, no custom DNS name will be published.<br>If the list contains a single Zone ID, a custom DNS name will be pulished in that zone.<br>Can also be a plain string, but that use is DEPRECATED because of Terraform issues. | `any` | `[]` | no |
 
 ## Outputs
 
diff --git a/main.tf b/main.tf
index bdc8434d..bcb8d267 100644
--- a/main.tf
+++ b/main.tf
@@ -346,7 +346,7 @@ module "dns_master" {
 
   enabled  = local.enabled && length(var.zone_id) > 0
   dns_name = local.cluster_dns_name
-  zone_id  = var.zone_id
+  zone_id  = try(var.zone_id[0], tostring(var.zone_id), "")
   records  = coalescelist(aws_rds_cluster.primary.*.endpoint, aws_rds_cluster.secondary.*.endpoint, [""])
 
   context = module.this.context
@@ -358,7 +358,7 @@ module "dns_replicas" {
 
   enabled  = local.enabled && length(var.zone_id) > 0 && !local.is_serverless && local.cluster_instance_count > 0
   dns_name = local.reader_dns_name
-  zone_id  = var.zone_id
+  zone_id  = try(var.zone_id[0], tostring(var.zone_id), "")
   records  = coalescelist(aws_rds_cluster.primary.*.reader_endpoint, aws_rds_cluster.secondary.*.reader_endpoint, [""])
 
   context = module.this.context
diff --git a/variables.tf b/variables.tf
index edd228c7..0873310d 100644
--- a/variables.tf
+++ b/variables.tf
@@ -1,7 +1,11 @@
 variable "zone_id" {
-  type        = string
-  default     = ""
-  description = "Route53 parent zone ID. If provided (not empty), the module will create sub-domain DNS records for the DB master and replicas"
+  type        = any
+  default     = []
+  description = <<-EOT
+    Route53 DNS Zone ID as list of string (0 or 1 items). If empty, no custom DNS name will be published.
+    If the list contains a single Zone ID, a custom DNS name will be pulished in that zone.
+    Can also be a plain string, but that use is DEPRECATED because of Terraform issues.
+    EOT
 }
 
 variable "security_groups" {