Name: ASN Extended
Creator: InternetData

ASN with each AS number's upstreams, peers and downstreams, its customer cone, its rank and whether it is Tier 1.

ID	`asn_extended_v1`
Formats	`csvgz`
Update Frequency	Daily
Last Updated	October 13th 2026 (yesterday)
Entries	123,192
File Size (`csvgz`)	6.99 MB

Overview

Every row and column of ASN, and fifteen more:

upstreams, peers and downstreams: the AS numbers it gets transit from, exchanges its own and its customers' routes with, and provides transit to, pipe-separated in ascending order. num_upstreams, num_peers and num_downstreams count them. A relationship is how two networks route each other's traffic, which is not always what either one pays the other.
customer_cone_asns: its customer cone, itself, its customers, their customers and so on down. customer_cone_ips, customer_cone_prefixes4 and customer_cone_prefixes6 count the IPv4 addresses those networks originate and the prefixes they announce.
rank: its place among all AS numbers in global routing by the size of its customer cone, 1 the largest.
transit_degree: how many distinct networks it is seen carrying routes between.
tier1: 1 for the transit-free networks at the top of the hierarchy, which get transit from no one and peer with each other.
siblings: the other AS numbers registered to the same organization, routed or not, and num_siblings counts them. They're left out of upstreams, peers and downstreams.

An AS number seen in no AS path keeps its row, with no rank and zeros elsewhere.

Formats

curl -L -o asn_extended_v1.csv.gz -X GET "https://internetdata.io/api/v2/database/download?id=asn_extended_v1&format=csvgz&apikey=$APIKEY"

Schema

Name	Type	Description
`asn`	`integer`	Autonomous System Number.
`name`	`string`	Name of the organization that operates the ASN.
`country`	`string`	ISO 3166 country code the registry assigned the ASN to.
`registry`	`string`	The regional internet registry that allocated the ASN: afrinic, apnic, arin, lacnic or ripe.
`allocated`	`date`	Date the registry allocated the ASN.
`domain`	`string`	The operator's own registrable domain.
`type`	`string`	Kind 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_ips`	`integer`	IPv4 addresses the ASN originates in global BGP.
`num_prefixes4`	`integer`	IPv4 prefixes the ASN announces.
`num_prefixes6`	`integer`	IPv6 prefixes the ASN announces.
`rpki_valid`	`integer`	Announcements an RPKI ROA authorizes.
`rpki_invalid`	`integer`	Announcements RPKI ROAs contradict: a wrong origin, or more specific than allowed.
`rpki_not_found`	`integer`	Announcements no RPKI ROA covers.
`rank`	`integer`	The ASN's place among all ASNs in global routing by the size of its customer cone, 1 the largest. Empty for an ASN seen in no AS path.
`tier1`	`boolean`	1 when the ASN is one of the transit-free networks at the top of the routing hierarchy, which get transit from no one and peer with each other (Tier 1), else empty.
`transit_degree`	`integer`	Distinct neighbors the ASN carries routes between: ASNs seen on either side of it in an AS path. 0 for a network that carries no one's routes.
`customer_cone_asns`	`integer`	ASNs in the ASN's customer cone: itself, its customers, their customers and so on down. 0 for an ASN seen in no AS path.
`customer_cone_ips`	`integer`	IPv4 addresses the ASNs of its customer cone originate.
`customer_cone_prefixes4`	`integer`	IPv4 prefixes the ASNs of its customer cone announce.
`customer_cone_prefixes6`	`integer`	IPv6 prefixes the ASNs of its customer cone announce.
`num_upstreams`	`integer`	Upstream providers: the networks the ASN gets transit from, which carry its routes to the rest of the internet.
`num_peers`	`integer`	Peers: the networks the ASN exchanges its own and its customers' routes with.
`num_downstreams`	`integer`	Downstream customers: the networks the ASN provides transit to.
`upstreams`	`string`	ASNs of its upstream providers, pipe-separated in ascending order (e.g. "174\|3356"). Empty when it has none.
`peers`	`string`	ASNs of its peers, pipe-separated in ascending order. Empty when it has none.
`downstreams`	`string`	ASNs of its downstream customers, pipe-separated in ascending order. Empty when it has none.
`num_siblings`	`integer`	Other ASNs the same organization holds, as its registry's records name it.
`siblings`	`string`	Those ASNs, pipe-separated in ascending order. Empty when it has none. A sibling is in none of upstreams, peers and downstreams.

Samples

asn	name	country	registry	allocated	domain	type	num_ips	num_prefixes4	num_prefixes6	rpki_valid	rpki_invalid	rpki_not_found	rank	tier1	transit_degree	customer_cone_asns	customer_cone_ips	customer_cone_prefixes4	customer_cone_prefixes6	num_upstreams	num_peers	num_downstreams	upstreams	peers	downstreams	num_siblings	siblings
`33932`	`everyWAN`	`ES`	`ripe`	`2004-09-09`	`everywan.com`	`isp`	`2304`	`9`	`1`	`10`	`0`	`0`	`10544`	`false`	`2`	`2`	`3072`	`11`	`2`	`2`	`5`	`1`	`174\|1299`	`6939\|29680\|56911\|60171\|212849`	`216392`	`0`	N/A
`136052`	`PT Cloud Hosting Indonesia`	`ID`	`apnic`	`2016-12-05`	`idcloudhost.com`	`hosting`	`21760`	`114`	`2`	`113`	`0`	`3`	`3922`	`false`	`7`	`6`	`26624`	`133`	`11`	`2`	`1`	`5`	`59796\|138608`	`7713`	`58390\|132647\|138062\|149364\|149670`	`0`	N/A
`264566`	`INTERNET O SUL TELECOM LTDA.`	`BR`	`lacnic`	`2015-01-15`	`internetosul.com.br`	`isp`	`1280`	`8`	`2`	`10`	`0`	`0`	`6876`	`false`	`5`	`3`	`7168`	`27`	`3`	`2`	`6`	`2`	`3356\|11432`	`999\|1031\|6057\|23106\|61568\|263152`	`262830\|263420`	`0`	N/A
`12455`	`Kenyan Post & Telecommunications Company / Telkom Kenya Ltd`	`KE`	`afrinic`	`2007-09-17`	`telkom.co.ke`	`isp`	`303104`	`141`	`4`	`0`	`0`	`145`	`6039`	`false`	`4`	`3`	`304384`	`145`	`5`	`3`	`2`	`2`	`5511\|37100\|37662`	`16637\|30844`	`37301\|328636`	`1`	`30994`
`61605`	`SELIGA TELECOMUNICAÇÕES DO BRASIL EIRELI`	`BR`	`lacnic`	`2021-01-08`	`seligatelecom.com.br`	`isp`	`512`	`3`	`7`	`0`	`0`	`10`	`11635`	`false`	`5`	`2`	`1536`	`9`	`12`	`3`	`1`	`1`	`28173\|28260\|262676`	`53062`	`267492`	`0`	N/A

ASN Extended

Overview

Formats

On this page