General purpose buckets naming rules for AWS

The following naming rules apply to general-purpose buckets on AWS.

• Bucket names must be between 3 (min) and 63 (max) characters long.
• Bucket names can consist only of lowercase letters, numbers, dots (.), and hyphens (-).
• Bucket names must begin and end with a letter or number.
• Bucket names must not contain two adjacent periods.
• Bucket names must not be formatted as an IP address (for example, 192.168.5.4).
• Bucket names must not start with the prefix xn--.
• Bucket names must not start with the prefix sthree- and the prefix sthree-configurator.
• Bucket names must not end with the suffix -s3alias. This suffix is reserved for access point alias names.
• Bucket names must not end with the suffix --ol-s3. This suffix is reserved for Object Lambda Access Point alias names.
• Bucket names must be unique across all AWS accounts in all the AWS Regions within a partition. A partition is a grouping of Regions. AWS currently has three partitions: aws (Standard Regions), aws-cn (China Regions), and aws-us-gov (AWS GovCloud (US)).

Example general purpose bucket names on AWS

The following example bucket names are valid and follow the recommended naming guidelines for general-purpose buckets:

• examplebucket
• asset-images-2020
• my-data-content

The following example bucket names are valid but not recommended for uses other than static website hosting:

• examplebucket.com
• www.assetimages.com
• my.data.s3.bucket

The following example bucket names are not valid:

• doc_example_bucket (contains underscores)
• DocExampleBucket (contains uppercase letters)
• doc-example-bucket- (ends with a hyphen)