---
title: "WHOIS lookup"
method: GET
path: "/whois"
tags: ["Domain"]
---

# WHOIS lookup

`GET /whois`

Returns domain registration data including registrar, expiry date, nameservers, and status. Uses RDAP with port-43 fallback for maximum TLD coverage.

## Query parameters

- `domain` string, required

## Response `200`

WHOIS data

- WhoisResult
  - `domain` string
  - `registered` boolean, nullable
  - `registrar` string, nullable
  - `status` string[]
  - `created` string, date-time, nullable
  - `updated` string, date-time, nullable
  - `expires` string, date-time, nullable
  - `nameservers` string[]

## Other responses

- `401` — Missing or invalid API key
- `404` — Resource not found
- `429` — Rate limit exceeded

---

[API](https://skmtc.dev/kiprio/apis/kiprio-api.md) · [All operations](https://skmtc.dev/kiprio/apis/kiprio-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/kiprio/kiprio-api/revisions/bbe8f8fb1a35/schema)