curl --request GET \
  --url https://atom.com/api/registrar/v1/domains/{domain_name}/nameservers \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": {
    "domain_name": "example.com",
    "nameservers": [
      "ns1.atom.com",
      "ns2.atom.com"
    ],
    "type": "atom"
  }
}