# Check subdomain availability > This endpoint is unauthenticated. Do not send a Bearer Token in the Authorization Header Endpoint: POST /subdomain-availability-check Version: 2.0.0 Security: ## Request fields (application/json): - `subdomain` (string) The subdomain to check for availability Example: "my-company" ## Response 200 fields (application/json): - `subdomain` (string) The subdomain that was checked for availability Example: "my-company" - `isAvailable` (boolean) Example: true ## Response 4XX fields (application/json): - `timestamp` (string) The datetime that the error occurred in ISO offset format Example: "2021-02-16T16:21:58.640+00:00" - `status` (integer) The HTTP status code of the error Example: 401 - `error` (string) The title of the error Example: "Unauthorized" - `message` (string) A more detailed error message - `path` (string) The path that was called which led to the error Example: "/folder-settings"