DNS & Email Security Checker – Endpoint

Base URL


https://api.rsch.io

Path


/api/v1/recon/dns

Method

GET

Query Parameters

domain – Required. Root domain to inspect, for example testphp.vulnweb.com.

Example Request


GET https://api.rsch.io/api/v1/recon/dns?domain=testphp.vulnweb.com

Responses follow the standard API envelope:


{
  "status": "success",
  "request_id": "bf1eb59d-0689-4271-b4ea-dc4875c4fc96",
  "date": "2025-11-19 08:19:28",
  "duration": 0.0488569736480713,
  "data": {
    "domain": "http://testphp.vulnweb.com/",
    "dns_basic": {
      "a_aaaa": {
        "status": "FAIL",
        "A": [],
        "AAAA": []
      },
      "ns": {
        "status": "FAIL",
        "NS": []
      },
      "mx": {
        "status": "WARN",
        "MX": []
      }
    },
    "email_security": {
      "spf": {
        "status": "FAIL",
        "found": false,
        "record": null,
        "notes": "No SPF (v=spf1) TXT record on the root domain."
      },
      "dmarc": {
        "status": "FAIL",
        "found": false,
        "record": null,
        "parsed": null,
        "notes": "No _dmarc TXT record found."
      },
      "dkim": {
        "status": "WARN",
        "found_any": false,
        "records": [],
        "notes": "No DKIM records found for common selectors. The domain may be using custom selectors."
      }
    }
  }
}

On error, the envelope contains an error field with a human-readable message.