curl --request POST \
  --url https://www.atom.com/api/registrar/v1/domains/check-bulk \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "domains": [
    "example.com",
    "test.net",
    "sample.org"
  ]
}
'

{
  "success": true,
  "data": {
    "total_requested": 3,
    "successfully_checked": 2,
    "errors": 1,
    "results": [
      {
        "domain": "example.com",
        "availability": 1,
        "status": "available",
        "error": "<string>"
      }
    ]
  }
}