description: |-
  The GeoIP database that placed the devices: `dbip` for DB-IP City Lite or
  `maxmind` for MaxMind GeoLite2. A map showing these positions credits that
  database. The header is absent when the server has no GeoIP database.
schema:
  type: string
  enum:
    - dbip
    - maxmind
  readOnly: true