ASN (Autonomous System Number) stands for a collection of internet protocol prefixes. An autonomous system (AS) represent large networks that are run by large organizations, internet service providers, etc.

ASN API

Q: How is ASN data used?

ASN data can be especially helpful to segment website visitors or app users in order to gain more context about their interaction with the service or website. Of course, there are plenty of other use cases.

Q: What information does ASN provide?

ASN data provide information about related domains, number of IP address as well as allocation dates.

Q: Why do some IP addresses not have ASN data?

Not all IP addresses are part of an autonomous system and are not routable on the internet.

Retrieve ASN information for any IP addresses by utilizing ipbase.com's ASN lookup API. We provide you with information about registered ranges & related domains.


asn: "AS13335",
organization: "Cloudflare, Inc.",
domain: "cloudflare.com",
country: " AU",
isp: "APNIC Research and Development",
ip_count: 512,
ranges_count: 2
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ASN lookup API

Our global data coverage enables developers to make data-driven and programmatic decisions.

All the data you need

Our ASN endpoint provides you with extensive data through our easy to read REST-API.

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ASN

Organization

Domain

Country

ISP

IP Count

Ranges Count

Range Details

Detect the type of IP address

ipbase.com's ASN API provides you with information about the type of IP address (hosting provider (ISP), business or consumer). The information can be used to better segment your users, deliver specific content and deliver a matching experience.

Gain more insights

Draw conclusions about the internet connections speeds, data restrictions and other aspects of your users' online experience by determining the ASN of your users' IP addresses and find out which ISPs are common amoung your users.

"We recently implemented breatheilo.com and were very impressed with their ASN API. We are using the API to analyze and optimize the user experience of our app users. We had quite a lot of questions as part of the integration phase and their support team never got tired helping us out."

Wernhard Berger CEO @ BreatheIlo

Easy to use and built with developers in mind!

Our ASN lookup API is not only easy to integrate but comes along with an plenty of REST-Clients and pre-built integrations. Also, checkout out our Postman-Collection.

Integration Documentation

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Frequently asked questions

What is ASN? How is ASN data used? What information does ASN provide? Why do some IP addresses not have ASN data?