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

AS9354

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS9354

NameTDNC

Country

RIRAPNIC

Network Overview

IPv4 Prefixes37

IPv6 Prefixes1

Upstreams (Transit)44

Downstreams (Customers)12

BGP Peers50

AS Path (BGP neighbours)

Upstreams (Transit)

AS1031PEER 1031 LLC AS12552GlobalConnect (IP-Only)AS1267WIND TRE S.P.A.AS12779IT.Gate S.p.A.AS14840BR.DIGITAL AS15802Emirates Integrated Telecommunications Company PJSC+38

AS9354TDNC

Downstreams (Customers)

AS10001Mics Network Corporation AS131915Hamamatsu Cable Television .Inc AS17529STARCAT Co .,LTD.AS17698COMMUNITY NETWORK CENTER INCORPORATED.AS17936Cable Television Kani Co.,Inc.AS18281Tokoname New-TV Corporation+6

Upstreams (Transit) (44)

AS1031PEER 1031 LLC

AS12552GlobalConnect (IP-Only)

AS1267WIND TRE S.P.A.

AS12779IT.Gate S.p.A.

AS14840BR.DIGITAL

AS15802Emirates Integrated Telecommunications Company PJSC

AS17676SoftBank Corp.

AS20326TeraSwitch Networks Inc.

AS20485TransTeleCom JSC

AS20562Open Peering (Broadband Hosting B.V.)

AS215638Cilix Limited

AS2497Internet Initiative Japan Inc.

Downstreams (Customers) (12)

AS10001Mics Network Corporation

AS131915Hamamatsu Cable Television .Inc

AS17529STARCAT Co .,LTD.

AS17698COMMUNITY NETWORK CENTER INCORPORATED.

AS17936Cable Television Kani Co.,Inc.

AS18281Tokoname New-TV Corporation

AS23630CAC Inc.

AS23798VR Techno Center,inc

AS23831NISIOWARI CATV CORPORATION

AS59108KATCH NETWORK INC.

AS9351ZTV CO.,LTD

AS9615TOYOHASHI CABLE NETWORK INC.

IPv4 Prefixes (37)

202.157.238.0/23

202.157.240.0/22

221.118.128.0/18

202.157.232.0/23

202.157.248.0/22

221.118.64.0/18

219.118.128.0/19

222.229.96.0/19

133.149.80.0/20

221.118.0.0/18

219.100.224.0/23

210.158.144.0/20

223.252.80.0/20

61.87.112.0/20

125.2.128.0/18

61.87.80.0/20

211.2.64.0/18

2.17.16.0/22

27.113.224.0/20

202.157.244.0/22

61.87.64.0/20

219.100.226.0/24

103.40.104.0/22

210.251.208.0/20

61.87.96.0/20

157.5.0.0/19

219.99.0.0/19

202.157.224.0/21

223.252.64.0/20

211.1.192.0/19

103.131.120.0/22

221.118.192.0/18

210.251.192.0/20

202.157.252.0/22

202.157.234.0/23

125.2.192.0/20

202.157.236.0/23

IPv6 Prefixes (1)

2405:7000::/32

BGP Peers (50)

AS12969Ljósleiðarinn ehf (Sýn)

AS13237euNetworks GmbH

AS14630Invesco Group Services, Inc.

AS16347ADISTA SAS

AS17639Converge ICT Solutions Inc.

AS18106Viewqwest Pte Ltd

AS1828PacketFabric / Unitas Global

AS198150SIACOM JSC

AS207841Inferno Communications Ltd

AS212483LEVEL EIGHTY-SIX COMMUNICATIONS LTD

AS213241TECHIT.BE SRL

AS24482SG.GS