check
Microsoft 365 tenant
The Azure AD / Microsoft 365 tenant a domain belongs to, from the cached entity document (azureTenant) or a live OpenID-configuration lookup when the domain has not been enriched yet. Domains only: an IP answers 400. A domain with no tenant answers 200 with tenant: null and a message. Costs one request of the monthly quota.
get/check/tenant
Query parameters
querystring
Domain (or a URL, reduced to its hostname). IP addresses answer 400.
Response
{"tenant": <raw tenant payload> | null, "message"?: string} — the tenant object is the upstream shape (tenantId, region, namespaceType, … as fetched)