# description
POST /api/domains/subdomain — the claimed subdomain, already verified. Unlike a domain you bring yourself, the pool zone covers this hostname entirely: `dns` is an empty array because there is nothing for you to publish.

# properties.domain.description
The new domain row. Returned with `status: "verified"` and all four DNS checks passing — it can send and receive immediately (subject to the account email being verified).

# properties.dns.description
Always empty for a claimed subdomain. Present so the shape matches createDomain, where it carries the records to publish.