> For the complete documentation index, see [llms.txt](https://doc.duaer.com/zh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/zh/getting-started/rdap.md).

# 在 Duaer 里查域名注册信息（RDAP）

在 Duaer 里：通过 RDAP 查询域名注册记录：注册商、注册与到期日期、状态码、域名服务器与 DNSSEC。一次成功查询用 1 额度。
## 能拿到什么

Duaer 数据市场里的「域名注册信息（RDAP）」：通过 RDAP 查询域名注册记录：注册商、注册与到期日期、状态码、域名服务器与 DNSSEC。查到结果时用 1 额度，结果交给数字组织的下一个节点。

从节点创建器选 Duaer 数据 → 域名注册信息（RDAP），或打开 [数据市场](/zh/getting-started/data-market.md)。相关：[NVD 漏洞库](/zh/getting-started/nvd.md)、[CISA 已被利用漏洞](/zh/getting-started/cisa-kev.md)。

## 适合做什么

- 查看域名的注册商、注册与到期日期。
- 核对域名状态与名称服务器。

## 在画布里检索

1. 打开节点创建器，选 Duaer 数据 → Domain registration (RDAP)。
2. 填 Domain（如 github.com）。
3. Limit 默认 10，最大 20。执行。

查到结果才扣 1 额度；没有结果、输入有误或上游失败都不扣。

## 用 API 调用

- GET https://api.duaer.com/v1/data/rdap?domain=github.com
- Authorization: Bearer <Duaer key>

下方是与数据市场「复制技能」相同的英文技能，含参数、示例与返回字段。

## 调用技能（英文）

与数据市场「复制技能」一致。

```
---
name: duaer-rdap
description: >-
  Duaer Domain registration (RDAP). Registration record of a domain over RDAP: registrar, registration and expiry dates, status codes, name servers, and DNSSEC.
  One successful search uses 1 Duaer credit.
---

# Duaer Domain registration (RDAP)

Duaer Domain registration (RDAP) looks up a domain in the registry that runs its top-level domain, through the rdap.org bootstrap. RDAP is the structured successor to WHOIS.

## When to use

- Check who registered a domain and when it expires.
- Verify name servers and lock status before a migration.

## When not to use

- Company records. Use https://skills.duaer.com/npi.md for US clinicians or a company registry.
- Security advisories. Use https://skills.duaer.com/nvd.md.

## Call

`GET https://api.duaer.com/v1/data/rdap?domain=github.com`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Get a Duaer key: https://skills.duaer.com/keys.md

## Parameters

Provide `domain`.

- `domain` — Registered domain such as github.com. A URL is trimmed to its host.

## Examples

- `GET https://api.duaer.com/v1/data/rdap?domain=github.com` — the github.com record.
- `GET https://api.duaer.com/v1/data/rdap?domain=wikipedia.org` — the wikipedia.org record.

## Result

The response is `{ "items": [...] }`. Each item has `source`, `title`, `url`, and `summary`, plus:

- `domain`, `registrar` — domain and registrar name.
- `registered`, `expires`, `lastChanged` — dates, YYYY-MM-DD.
- `status`, `nameservers`, `dnssec` — EPP status codes, name servers, and whether DNSSEC is signed.

The search returns one row. Some country-code domains have no RDAP service and return none.

Fields without a value are left out.

## Credits

A search that returns at least one row uses 1 credit.
An empty search, a search that finds nothing, or a failed search uses 0.
Wrong input returns 400 with a message and uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

## Related

- https://skills.duaer.com/nvd.md — Duaer NVD CVE records
- https://skills.duaer.com/cisa-kev.md — Duaer CISA known exploited vulnerabilities

```
## Questions

### Duaer 的域名注册信息（RDAP）检索扣多少额度？

查到结果时扣 1 额度；没有结果或出错不扣。

### Duaer 域名注册信息（RDAP）为什么查不到某些域名？

部分国家代码顶级域名没有 RDAP 服务，Duaer 此时没有结果，不扣额度。

## 相关

- [在 Duaer 里查NVD 漏洞库](https://doc.duaer.com/zh/getting-started/nvd.md)
- [在 Duaer 里查CISA 已被利用漏洞](https://doc.duaer.com/zh/getting-started/cisa-kev.md)