An Autonomous System Number (ASN) is a unique number assigned to a network in global internet routing. Every provider that participates directly on the internet has its own ASN (e.g. AS15169 for Google).

What are upstreams, peers and prefixes?

Upstreams are transit providers through which an AS reaches the internet. Peers are networks with direct traffic exchange. Prefixes are the IP address ranges the AS announces via BGP.

Where does the ASN data come from?

The data comes from the official RDAP services of the RIRs (RIPE, ARIN, etc.) and from RIPEstat (prefixes and neighbour ASNs).

ASN Lookup – Networks, Upstreams and Prefixes

AS4549

ASN

ARIN

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS4549

NameESPN-AS

OrganisationESPN, Inc.

Country –

RIRARIN

Allocated21.04.1995

Network Overview

IPv4 Prefixes37

IPv6 Prefixes0

Upstreams (Transit)10

Downstreams (Customers)0

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS10429Vivo (TELEFÔNICA BRASIL)AS11014Metrotel AS11172Alestra, S. de R.L. de C.V.AS14178Megacable Comunicaciones de Mexico, S.A. de C.V.AS17222MUNDIVOX DO BRASIL LTDA AS3356Lumen (Level 3)+4

AS4549ESPN-AS

Downstreams (Customers)

none

Upstreams (Transit) (10)

AS10429Vivo (TELEFÔNICA BRASIL)

AS11014Metrotel

AS11172Alestra, S. de R.L. de C.V.

AS14178Megacable Comunicaciones de Mexico, S.A. de C.V.

AS17222MUNDIVOX DO BRASIL LTDA

AS3356Lumen (Level 3)

AS3549Lumen (fka. Global Crossing)

AS6461Zayo Bandwidth

AS7018AT&T Enterprises, LLC

AS7303Telecom Argentina S.A.

IPv4 Prefixes (37)

45.63.224.0/21

45.63.184.0/24

45.63.236.0/24

45.63.241.0/24

45.63.169.0/24

45.63.192.0/24

45.63.232.0/21

45.63.240.0/24

45.63.195.0/24

45.63.242.0/24

45.63.247.0/24

45.63.194.0/24

45.63.244.0/24

45.63.245.0/24

192.234.4.0/24

192.234.3.0/24

45.63.248.0/21

45.63.234.0/24

45.63.243.0/24

45.63.185.0/24

45.63.193.0/24

45.63.168.0/24

45.63.208.0/21

45.63.235.0/24

45.63.216.0/21

45.63.192.0/23

45.63.233.0/24

199.184.108.0/24

192.234.2.0/24

45.63.255.0/24

45.63.240.0/21

192.234.1.0/24

45.63.237.0/24

45.63.168.0/21

45.63.170.0/24

45.63.248.0/24

45.63.246.0/24

My IP ASN Lookup IP Lookup WHOIS DNS Lookup

What is an ASN?

An Autonomous System Number (ASN) is a unique number assigned to a network on the internet. Upstreams are the transit providers through which the AS reaches the internet. Peers are networks with which direct traffic exchange takes place. Prefixes are the IP address ranges that the AS announces to the internet. Data via RIPE NCC RDAP and RIPEstat API.