---
title: "Lookup ASN for an IP address"
method: GET
path: "/ip/asn-lookup.json"
tags: ["ip"]
---

# Lookup ASN for an IP address

`GET /ip/asn-lookup.json`

ASN stands for Autonomous System Number

## Query parameters

- `ip` string[], required

## Response `200`

successful operation

- Pet[] — unresolved $ref

## Other responses

- `400` — Invalid status value

---

[API](https://skmtc.dev/redirect2me/apis/resolve-rs-api.md) · [All operations](https://skmtc.dev/redirect2me/apis/resolve-rs-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/redirect2me/resolve-rs-api/revisions/81840f163c49/schema)