InternetDataInternetData

ASN

Every allocated AS number, with its holder, domain, network type, announced space and RPKI standing.

Explore API
IDasn_v1
Formatscsvgz
Update FrequencyDaily
Last UpdatedSeptember 30th 2026 (today)
Entries123,029
File Size (csvgz)2.86 MB

Overview

One row per AS number the regional registries have allocated. The holder's name, country, registry and allocation date come from the registries' own records. domain is the holder's own domain where one can be established, and type is our classification of the network the AS runs.

The announcement columns count what the AS originates in the global routing table: num_ips its IPv4 addresses, num_prefixes4 and num_prefixes6 its prefixes, and rpki_valid, rpki_invalid and rpki_not_found its routes by RPKI validation state. An AS that announces nothing has zeros there.

IP ASN maps every announced range to its origin AS, and ASN Whois carries each AS number's registry record and contacts.

Formats

curl -L -o asn_v1.csv.gz -X GET "https://internetdata.io/api/v2/database/download?id=asn_v1&format=csvgz&apikey=$APIKEY"
Schema
NameTypeDescription
asnintegerAutonomous System Number.
namestringName of the organization that operates the ASN.
countrystringISO 3166 country code the registry assigned the ASN to.
registrystringThe regional internet registry that allocated the ASN: afrinic, apnic, arin, lacnic or ripe.
allocateddateDate the registry allocated the ASN.
domainstringThe operator's own registrable domain.
typestringKind of network the ASN runs. Values are listed below.
isp
An Internet service provider: access, mobile or transit networks that connect other people.
hosting
A hosting, cloud, CDN or content network whose addresses serve machines rather than people.
education
A university, school or research and education network.
government
A government body, agency or armed service.
business
Any other organization running its own network, and the default when no signal says otherwise.
num_ipsintegerIPv4 addresses the ASN originates in global BGP.
num_prefixes4integerIPv4 prefixes the ASN announces.
num_prefixes6integerIPv6 prefixes the ASN announces.
rpki_validintegerAnnouncements an RPKI ROA authorizes.
rpki_invalidintegerAnnouncements RPKI ROAs contradict: a wrong origin, or more specific than allowed.
rpki_not_foundintegerAnnouncements no RPKI ROA covers.
Samples
asnnamecountryregistryallocateddomaintypenum_ipsnum_prefixes4num_prefixes6rpki_validrpki_invalidrpki_not_found
200716Rafael PossamaiUSripe2022-12-08as200716.neteducation000000
151367ONDO SALES LLCMNapnic2023-05-31ondo.mnbusiness000000
328791Mr. Price Group LimitedZAafrinic2021-01-25mrpricegroup.combusiness25610100
63966RIZAL1PHapnic2015-03-25rcbc.combusiness51230300
402953Camas School DistrictUSarin2026-08-24wednet.edueducation000000

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