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

AS7473

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS7473

NameSINGTEL-AS-AP

OrganisationSingapore Telecommunications (SINGTEL Internet Exchange)

Country

RIRAPNIC

Allocated04.09.2008

Abuse contactleonkoh@singtel.com

Network Overview

IPv4 Prefixes46

IPv6 Prefixes9

Upstreams (Transit)43

Downstreams (Customers)242

BGP Peers5

AS Path (BGP neighbours)

Upstreams (Transit)

AS1103SURF B.V.AS12389Rostelecom PJSC AS1273Vodafone Group PLC AS1299Arelion (fka. Telia Carrier)AS136106PT Mega Akses Persada AS15802Emirates Integrated Telecommunications Company PJSC+37

AS7473SINGTEL-AS-AP

Downstreams (Customers)

AS10003Ogaki Cable Television Co.,Inc.AS10019Matsusaka Cable-TV Station Inc.AS10024LGA International AS10082Morgan Stanley Management Service (Singapore) Pte. Ltd AS10122NETSTAR (SG) PTE. LTD.AS10310Yahoo Holdings Inc.+236

Upstreams (Transit) (43)

AS1103SURF B.V.

AS12389Rostelecom PJSC

AS1273Vodafone Group PLC

AS1299Arelion (fka. Telia Carrier)

AS136106PT Mega Akses Persada

AS15802Emirates Integrated Telecommunications Company PJSC

AS17557Pakistan Telecommunication Company Limited

AS17676SoftBank Corp.

AS23764China Telecom Global

AS2497Internet Initiative Japan Inc.

AS2516KDDI Corporation

AS2914NTT America, Inc.

Downstreams (Customers) (100)

AS10003Ogaki Cable Television Co.,Inc.

AS10019Matsusaka Cable-TV Station Inc.

AS10024LGA International

AS10082Morgan Stanley Management Service (Singapore) Pte. Ltd

AS10122NETSTAR (SG) PTE. LTD.

AS10310Yahoo Holdings Inc.

AS10376Wells Fargo Bank, N.A.

AS109CISCO SYSTEMS, INC.

AS1103SURF B.V.

AS11158NTT America, Inc.

AS11179Aryaka Networks, Inc.

AS11228ARINC INCORPORATED

AS1200

AS12257

AS12389Rostelecom PJSC

AS125

AS1273Vodafone Group PLC

AS1299Arelion (fka. Telia Carrier)

AS136106PT Mega Akses Persada

AS14907Wikimedia Foundation Inc.

AS15802Emirates Integrated Telecommunications Company PJSC

AS17557Pakistan Telecommunication Company Limited

AS17639Converge ICT Solutions Inc.

AS17653

AS17676SoftBank Corp.

AS23764China Telecom Global

IPv4 Prefixes (46)

203.208.197.0/24

202.165.148.0/24

203.208.199.0/24

203.208.160.0/19

101.234.31.0/24

202.189.130.0/23

202.165.128.0/19

101.234.34.0/24

202.160.224.0/19

203.208.128.0/17

203.208.165.0/24

203.208.207.0/24

203.208.155.0/24

120.72.64.0/24

203.208.191.0/24

202.189.128.0/22

101.234.32.0/24

203.208.143.0/24

117.18.47.0/24

203.208.150.0/24

202.189.132.0/22

117.18.48.0/24

202.189.129.0/24

194.180.112.0/23

203.208.141.0/24

203.208.175.0/24

203.208.192.0/19

117.18.32.0/19

203.127.108.0/24

120.72.65.0/24

203.208.204.0/24

203.208.186.0/24

193.103.148.0/24

202.83.218.0/24

220.232.57.0/24

203.208.173.0/24

203.208.184.0/24

203.208.158.0/24

101.234.40.0/24

203.208.164.0/24

203.208.147.0/24

203.208.189.0/24

202.189.128.0/24

203.208.179.0/24

203.208.128.0/19

202.189.136.0/21

IPv6 Prefixes (9)

2001:c10:ff1b::/48

2001:c10:ff14::/48

2001:c10:ff24::/48

2001:c10:ff11::/48

2404:1000:1::/48

2a05:a884:de20::/48

2001:c10::/32

2001:c10:ff1c::/48

2404:1000:2::/48

BGP Peers (5)

AS14907Wikimedia Foundation Inc.

AS17639Converge ICT Solutions Inc.

AS36236NetActuate, Inc

AS38001NewMedia Express Pte. Ltd.

AS49544i3D.net B.V

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.