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

AS45158

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS45158

NameSYNTELPTYLTD-AU

OrganisationTASMANET

Country

RIRAPNIC

Allocated08.09.2023

Abuse contactmichael.diamond@commsgroup.global

Network Overview

IPv4 Prefixes10

IPv6 Prefixes2

Upstreams (Transit)1

Downstreams (Customers)9

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS64098TASMANET

AS45158SYNTELPTYLTD-AU

Downstreams (Customers)

AS12041Afilias, Inc.AS131214Interact Hosting Pty Ltd AS132691Anglicare Tasmania Inc AS132836TASMANET AS135612Hydro-Electric Corporation AS135672GRANGE RESOURCES (TASMANIA) PTY LTD+3

Upstreams (Transit) (1)

AS64098TASMANET

Downstreams (Customers) (9)

AS12041Afilias, Inc.

AS131214Interact Hosting Pty Ltd

AS132691Anglicare Tasmania Inc

AS132836TASMANET

AS135612Hydro-Electric Corporation

AS135672GRANGE RESOURCES (TASMANIA) PTY LTD

AS136240TT-Line Company Pty Ltd

AS142422Hobart City Council

AS38549Viewbank Rise Networks

IPv4 Prefixes (10)

103.251.172.0/22

120.29.240.0/21

103.251.174.0/23

103.251.172.0/23

203.17.166.0/24

203.33.128.0/24

120.29.245.0/24

103.102.118.0/24

203.13.22.0/24

203.16.175.0/24

IPv6 Prefixes (2)

2407:1e00::/32

2407:1e00:1003::/48

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.