---
title: "FCrDNS / PTR check"
method: GET
path: "/email/fcrdns"
tags: ["email"]
---

# FCrDNS / PTR check

`GET /email/fcrdns`

## Request

- Base URL: `https://intodns.ai/api`
- URL: `https://intodns.ai/api/email/fcrdns`
- Auth: none required

Check PTR records and forward-confirmed reverse DNS for mail-server IPs.

## Query parameters

- `domain` string, required

## Response `200`

FCrDNS analysis result

- FCrDNSResult
  - `domain` string
  - `timestamp` string, date-time
  - `check` string
  - `description` string
  - `result` object
    - `checked` boolean
    - `results` object[]
    - `issues` string[]
  - `citationUrl` string
  - `apiUrl` string

---

[API](https://skmtc.dev/intodns/apis/intodns-ai-api.md) · [All operations](https://skmtc.dev/intodns/apis/intodns-ai-api/llms.txt) · [OpenAPI document](https://skmtc.dev/intodns/apis/intodns-ai-api/revisions/c6c196b2fb4c?raw)