curl --request POST \
  --url 'https://domain.hostwithdothost.com/?action=bulkcheckavailability' \
  --header 'Content-Type: application/json' \
  --data '{
  "username": "your_username",
  "password": "your_password",
  "domains": [
    "example1.com",
    "example2.net"
  ]
}'

{
  "status": "success",
  "availability": {
    "heylomol.com": [
      {
        "TLD": "com",
        "DomainName": "heylomol",
        "Status": "available",
        "Command": "create",
        "Period": 1,
        "IsFee": false,
        "Price": "11.2900",
        "Currency": "USD",
        "Reason": null
      }
    ],
    "tayad.net": [
      {
        "TLD": "net",
        "DomainName": "tayad",
        "Status": "available",
        "Command": "create",
        "Period": 1,
        "IsFee": false,
        "Price": "13.9900",
        "Currency": "USD",
        "Reason": null
      }
    ]
  }
}