DreamObjects Bucket Names

When choosing a name for your bucket, you’ll need to be careful to select something that’s DNS-compliant. That’s because your bucket names are used as part of the hostname in the URL when accessing its contents.

As of September 2017, DreamHost is enforcing the following stricter rule set for new bucket names.

New Bucket Naming Rules

The following are the new rules that will enforced. Each bucket name:

  • Can be 3–63 characters long
  • Can only have:
    • ASCII lowercase letters
    • ASCII numbers
    • periods (.)
    • hyphens (-)
  • Cannot have a period (.) and hyphen (-) next to each other (adjacent)
  • Cannot include any Unicode characters, emoji, or non-printable ASCII
  • Must NOT be formatted as an IP address (e.g.,

How is DreamHost enforcing this?

Many S3-compatible clients have already enforced these stricter rules when creating new buckets. If you use a client that doesn’t enforce all of these rules, DreamObjects will return an error stating the bucket name is invalid.

If your client shows you the HTTP error response, you’ll see a 400 InvalidBucketName response code, including a link to this article.

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