---
type: resource-type
title: RDSDBSubnetGroup
description: aws resource type AWS::RDS::DBSubnetGroup
name: RDSDBSubnetGroup
lexicon: aws
resource_type: AWS::RDS::DBSubnetGroup
---
`AWS::RDS::DBSubnetGroup`, a resource type of the aws lexicon.

## Properties

- `DBSubnetGroupDescription` (`string`, required): The description for the DB subnet group.
- `SubnetIds` (`string[]`, required): The EC2 Subnet IDs for the DB subnet group.
- `DBSubnetGroupArn` (`string`, optional)
- `DBSubnetGroupName` (`string`, optional): The name for the DB subnet group. This value is stored as a lowercase string. Constraints: + Must contain no more than 255 letters, numbers, periods, underscores, spaces, or hyphens. + Must not be default. + First character must be a letter. Example: ``mydbsubnetgroup``
- `Tags` (`RDSDBSubnetGroup_Tag[]`, optional): Tags to assign to the DB subnet group.

## Attributes

- `DBSubnetGroupArn`

## Governed by

- [WAW036](/rules/WAW036.md): Non-ASCII characters in EC2/IAM/CW string properties — rejected at changeset time