Tailnet name

Each tailnet has a unique tailnet name. You can view your tailnet name in the DNS page of the admin console.

Your tailnet name is used by multiple Tailscale features:

• It is used by MagicDNS to register DNS names for devices in your network.
• It is used by HTTPS as part of the fully qualified domain name for HTTPS certificates.
• It is used by sharing to uniquely identify devices that you share with others.

You can use a default name or a fun name as your tailnet name.

Default tailnet name

A default tailnet name is assigned when a tailnet is created.

A default tailnet name is of the form:

tailNNNN.ts.net

or

tailnet-NNNN.ts.net

where NNNN is a randomly assigned hexadecimal string generated by Tailscale.

For example:

tailfe8c.ts.net

Your default name always exists for your tailnet, even if you create a fun tailnet name.

Fun tailnet name

Optionally, you can change your tailnet name to the form:

tail-scale.ts.net

where tail-scale is a unique random name suggested by Tailscale.

For example:

cat-crocodile.ts.net.

If you have a fun name, you can set your tailnet name to either the fun name or the default name in the DNS page of the admin console.

Creating a fun tailnet name

To make it easier to remember or type your tailnet name, for example, when you use features like MagicDNS, you can use a fun name instead of a default tailnet name.

Once you use your fun name for HTTPS certificates, you cannot change it to another fun name—you will be able to switch only between that fun name and the default name.

You need to be an Owner, Admin, or Network admin to create a fun tailnet name.

1. Open the DNS page in the admin console.

2. Select Rename tailnet.

3. Confirm in the UI that you want to create a fun name.

4. Select one of the randomly generated tailnet names.

   If you don't want any of the proposed names, select Re-roll options until you find one that you want to select.

5. Select Rename tailnet.

When you create a fun tailnet name, it becomes your active tailnet name. If you previously used your default tailnet name for MagicDNS, HTTPS certificates, or sharing, existing links to devices in your tailnet may no longer work.

Switching between the default and fun names

You need to be an Owner, Admin, or Network admin to switch between the default and fun names.

1. Open the DNS page in the admin console.
2. Select Rename tailnet.
3. Confirm in the UI that you want to switch your tailnet name.
4. Select the name that you want to use.
5. Select Rename tailnet.

Because your tailnet name is used in MagicDNS, HTTPS certificates, or sharing, switching your tailnet name may break existing links to devices in your tailnet.

Re-rolling the fun name

If you have already used your fun name for HTTPS certificates, you cannot change it to another fun name.

If you have not used your fun name for HTTPS certificates and you want a different fun name, visit the DNS page to rename your tailnet. If you do decide to re-roll and choose a new fun name, you cannot go back to the previous fun name.

Organization name

An organization name is created when you create a tailnet, and is not the same as a tailnet name. A tailnet name let you use Tailscale features, like MagicDNS and HTTPS, without leaking your organization name. An organization name is used by the Tailscale API.

You cannot change your organization name.

You can view your organization name in the Settings page of the admin console.