curl --request POST \
  --url https://api.voxo.co/v2/number-porting/toolbox/port-in-availability \
  --header 'Content-Type: application/json' \
  --data '
{
  "noAuthKey": "<string>",
  "numbers": [
    "<string>"
  ]
}
'

[
  {
    "id": 123,
    "numbers": [
      {
        "telephoneNumber": "<string>",
        "serviceProviderName": "<string>"
      }
    ],
    "csrLookupResult": "<unknown>"
  }
]