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

AS38280

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS38280

NameMONASHUNI-MY-AS-AP

OrganisationMonash University

Country

RIRAPNIC

Allocated04.09.2008

Abuse contactdomain-request@monash.edu

Network Overview

IPv4 Prefixes50

IPv6 Prefixes1

Upstreams (Transit)4

Downstreams (Customers)0

BGP Peers2

AS Path (BGP neighbours)

Upstreams (Transit)

AS24482SG.GS AS24514MINISTRY OF HIGHER EDUCATION MALAYSIA AS9534Maxis AS9930TIME dotCom Bhd

AS38280MONASHUNI-MY-AS-AP

Downstreams (Customers)

none

Upstreams (Transit) (4)

AS24482SG.GS

AS24514MINISTRY OF HIGHER EDUCATION MALAYSIA

AS9534Maxis

AS9930TIME dotCom Bhd

IPv4 Prefixes (50)

118.139.128.0/24

118.139.151.0/24

118.139.145.0/24

118.139.139.0/24

59.191.205.0/24

59.191.193.0/24

118.139.133.0/24

59.191.192.0/20

59.191.201.0/24

118.139.156.0/24

59.191.198.0/24

59.191.204.0/24

59.191.207.0/24

59.191.195.0/24

59.191.192.0/24

118.139.143.0/24

118.139.152.0/24

118.139.129.0/24

118.139.146.0/24

118.139.153.0/24

118.139.137.0/24

59.191.202.0/24

118.139.149.0/24

118.139.159.0/24

118.139.158.0/24

118.139.157.0/24

118.139.155.0/24

118.139.135.0/24

118.139.134.0/24

118.139.141.0/24

118.139.128.0/19

118.139.130.0/24

59.191.200.0/24

118.139.132.0/24

118.139.138.0/24

118.139.144.0/24

59.191.199.0/24

59.191.203.0/24

118.139.136.0/24

59.191.194.0/24

59.191.206.0/24

118.139.154.0/24

118.139.150.0/24

59.191.197.0/24

59.191.196.0/24

118.139.148.0/24

118.139.131.0/24

118.139.142.0/24

118.139.140.0/24

118.139.147.0/24

IPv6 Prefixes (1)

2404:2400:200::/48

BGP Peers (2)

AS38001NewMedia Express Pte. Ltd.

AS55720Gigabit Hosting Sdn Bhd

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.