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---
stage: Data Stores
group: Tenant Scale
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://handbook.gitlab.com/handbook/product/ux/technical-writing/#assignments
---
# Namespaces
Namespaces organize projects in GitLab. Because each namespace is separate,
you can use the same project name in multiple namespaces.
## Types of namespaces
GitLab has two types of namespaces:
- **User**: Your personal namespace is based on your username. In a personal namespace:
- You cannot create subgroups.
- Groups do not inherit your namespace permissions or group features.
- All the projects you create are under the scope of this namespace.
- Changes to your username also change project and namespace URLs. Before you change your username,
read about [repository redirects](../project/repository/index.md#repository-path-changes).
- **Group**: A group or subgroup namespace is based on the group or subgroup name. In group and subgroup namespaces:
- You can create multiple subgroups to manage multiple projects.
- Subgroups inherit some of the parent group settings. You can view these in the subgroup **Settings**.
- You can configure settings specifically for each subgroup and project.
- You can manage the group or subgroup URL independently of the name.
## Determine which type of namespace you're in
To determine whether you're in a group or personal namespace, you can view the URL. For example:
| Namespace for | URL | Namespace |
| ------------- | --- | --------- |
| A user named `alex`. | `https://gitlab.example.com/alex` | `alex` |
| A group named `alex-team`. | `https://gitlab.example.com/alex-team` | `alex-team` |
| A group named `alex-team` with a subgroup named `marketing`. | `https://gitlab.example.com/alex-team/marketing` | `alex-team/marketing` |
## Name limitations
When you choose a name for your namespace, keep in mind the [character limitations](../reserved_names.md#limitations-on-usernames-project-and-group-names-and-slugs) and [reserved group names](../reserved_names.md#reserved-group-names).
NOTE:
Namespaces with a period (`.`) cause issues with SSL certificate validation and the source path when [publishing Terraform modules](../packages/terraform_module_registry/index.md#publish-a-terraform-module).
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