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ASN Info API

Introduction

An autonomous system (AS) is a collection of connected Internet Protocol (IP) routing prefixes managed by one or more network operators on behalf of a single administrative entity or domain. It has a single and clearly defined external routing policy.

An autonomous system number (ASN) is a unique number used to identify an autonomous system. It enables that system to exchange exterior routing information with other neighbouring autonomous systems.

A detailed two-part blog post that explains the fundamentals of these systems and the role of AS is available below:

 

The AS Info APIs provide valuable information about the autonomous systems which allows you to identify the ownership of the systems and discover their neighbouring systems.

This API returns extended and detailed information about an Autonomous System (AS) when provided with an AS number. The information includes the registration, IPv4 address space announcements and ranking.

 

Get Started

This API is part of the IP Geolocation API Package and is available in free and paid plans. Please visit the IP Geolocation API Package package page for limits and pricing information.

Endpoints

IPv4 only API Endpoint

Use this endpoint to force API calls routed over the IPv4 network only

GET
https://api.bigdatacloud.net/data/asn-info

Dual-Stack API Endpoint

This endpoint has native IPv6 support and backs the API calls routed over both IPv4 and IPv6 networks

GET
https://api-bdc.net/data/asn-info

Request

Parameter
asn
Type
string
Required
Yes
Description
Autonomous System Number as numeric or ASN format (e.g. 123 or AS123 or ASN123)
Parameter
localityLanguage
Type
string
Required
Optional, default value: en
Description
Preferred language for locality names in ISO 639-1 format, such as 'en' for English, 'es' for Spanish etc. If the requested language is not available for a requested location, it will default to English. If no English variant is known, will provide the native, local names
Parameter
key
Type
string
Required
Yes
Description
Your API key

Responses

200
Success

Sample Query

GET
https://api-bdc.net/data/asn-info?asn=AS16509&localityLanguage=en&key=[YOUR API KEY]

Schema

application/json
asnstring
Autonomous System Number string
asnNumericinteger
Autonomous System Number
organisationstring
Registered Organisation
namestring
Registered name
registrystring
The Regional Internet Registry (RIR) the AS is registered with
registeredCountrystring
Registered Country ISO 3166-1 Alpha-2 code
registeredCountryNamestring
Registered Country localised name. The language is as defined by the 'localityLanguage' request parameter
registrationDatestring
Registration date in 'yyyy-mm-dd' format
registrationLastChangestring
Registration modification date in 'yyyy-mm-dd' format
totalIpv4Addressesinteger
Total number of IP addresses announced by the AS
totalIpv4Prefixesinteger
Total number of ipV4 BGP prefixes announced by the AS
totalIpv4BogonPrefixesinteger
Total number of ipV4 bogon prefixes announced by the AS
totalIpv6Prefixesinteger
Total number of ipV6 BGP prefixes announced by the AS
totalIpv6BogonPrefixesinteger
Total number of ipV6 bogon prefixes announced by the AS
rankinteger
Global rank by total number of IP addresses announced
rankTextstring
Global rank by total number of IP addresses announced including total

Sample Response

JSON View
403
Access denied, or your quota limit has exceeded

Sample Response

JSON View
404
Found no valid entry for the request

Sample Response

JSON View
500
An error has occurred and did not complete your request. Please try again

Sample Response

JSON View
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