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

AS139883

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS139883

NameSPTEL-AS-AP

OrganisationSPTEL PTE. LTD.

Country

RIRAPNIC

Allocated13.12.2019

Abuse contactnoc@sptel.com

Network Overview

IPv4 Prefixes6

IPv6 Prefixes1

Upstreams (Transit)1

Downstreams (Customers)28

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS23856SPTEL PTE. LTD.

AS139883SPTEL-AS-AP

Downstreams (Customers)

AS131195SIM Headquarters AS1312178 Kallang Sector AS131244Invisalign Singapore Pte. Ltd.AS131475Singapore Institute of Technology AS131582QUAPE PTE LTD AS13225379 Robinson Road+22

Upstreams (Transit) (1)

AS23856SPTEL PTE. LTD.

Downstreams (Customers) (28)

AS131195SIM Headquarters

AS1312178 Kallang Sector

AS131244Invisalign Singapore Pte. Ltd.

AS131475Singapore Institute of Technology

AS131582QUAPE PTE LTD

AS13225379 Robinson Road

AS132364Level 16, Nexxus Buildings

AS133535PRIMABANANEN PTE. LTD.

AS134407MediaCorp Pte Ltd

AS136459F12 DATA PTE LTD

AS139028Singapore Technologies Engineering Ltd

AS142119NEX CORPORATEIT PTE LTD

IPv4 Prefixes (6)

61.16.52.0/24

61.13.236.0/24

61.16.55.0/24

61.16.51.0/24

166.120.128.0/24

61.16.110.0/24

IPv6 Prefixes (1)

2407:9880:8112::/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.