{
  "$schema": "http://json-schema.org/draft-07/schema",
  "type": "array",
  "items": {
    "type": "object",
    "properties": {
      "subdomain": {
        "type": "string"
      },
      "url": {
        "type": "string",
        "pattern": "^(https?://)?(?:[a-zA-Z0-9-]+\\.){1,}(?:[a-zA-Z0-9-]{2,})\\/?$"
      },
      "email": {
        "type": "string",
        "format": "email"
      },
      "type": {
        "type": "string",
        "enum": ["A", "CNAME", "TXT", "MX"]
      }
    },
    "required": ["subdomain", "url", "email"],
    "additionalProperties": false
  }
}