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

AS39351

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS39351

NameESAB-AS

OrganisationESAB-MNT

Country –

RIRRIPE NCC

Allocated06.02.2006

Abuse contactabuse@31173.se

Network Overview

IPv4 Prefixes53

IPv6 Prefixes21

Upstreams (Transit)99

Downstreams (Customers)2007

BGP Peers2937

AS Path (BGP neighbours)

Upstreams (Transit)

AS1031PEER 1031 LLC AS1257Tele2 Sverige AB AS12577MMC GmbH AS1267WIND TRE S.P.A.AS12735TurkNet Iletisim Hizmetleri A.S.AS12779IT.Gate S.p.A.+93

AS39351ESAB-AS

Downstreams (Customers)

AS10075Fiber@Home Global Limited AS10099China Unicom Global AS10122NETSTAR (SG) PTE. LTD.AS10158Kakao Corp AS10282GLOBAL ONE AS1031PEER 1031 LLC+2001

Upstreams (Transit) (99)

AS1031PEER 1031 LLC

AS1257Tele2 Sverige AB

AS12577MMC GmbH

AS1267WIND TRE S.P.A.

AS12735TurkNet Iletisim Hizmetleri A.S.

AS12779IT.Gate S.p.A.

AS1299Arelion (fka. Telia Carrier)

AS13030Init7 (Switzerland) Ltd.

AS137409GSL Networks Pty LTD

AS14840BR.DIGITAL

AS15802Emirates Integrated Telecommunications Company PJSC

AS15958CETIN Ltd. Belgrade

Downstreams (Customers) (100)

AS10075Fiber@Home Global Limited

AS10099China Unicom Global

AS10122NETSTAR (SG) PTE. LTD.

AS10158Kakao Corp

AS10282GLOBAL ONE

AS1031PEER 1031 LLC

AS10310Yahoo Holdings Inc.

AS1101SURF (Thunderlab)

AS11019HAProxy Technologies, Inc.

AS1103SURF B.V.

AS1126Vancis Advanced ICT Services

AS11260EastLink

AS12307Sandro Bolliger trading as Bolliger Network Solutions

AS1257Tele2 Sverige AB

AS12577MMC GmbH

AS12637Seeweb s.r.l.

AS1267WIND TRE S.P.A.

AS12735TurkNet Iletisim Hizmetleri A.S.

AS12779IT.Gate S.p.A.

AS12859BIT BV

AS12969Ljósleiðarinn ehf (Sýn)

AS1299Arelion (fka. Telia Carrier)

AS12993

AS12996

AS13002

AS13004Serbian Open Exchange DOO

AS13009

AS1301

AS13030Init7 (Switzerland) Ltd.

IPv4 Prefixes (53)

154.43.129.0/24

185.209.197.0/24

45.130.118.0/24

154.44.128.0/24

85.203.53.0/24

185.65.133.0/24

45.83.222.0/23

185.195.232.0/24

185.213.153.0/24

193.32.126.0/24

141.98.255.0/24

151.241.163.0/24

45.132.193.0/24

147.90.117.0/24

185.195.235.0/24

185.213.154.0/24

45.129.58.0/24

185.209.198.0/24

185.65.135.0/24

185.209.196.0/24

185.213.155.0/24

45.129.59.0/24

154.43.132.0/24

154.57.137.0/24

185.195.233.0/24

193.32.248.0/24

154.46.33.0/24

45.149.104.0/24

154.57.138.0/24

193.32.249.0/24

149.7.161.0/24

193.138.216.0/22

141.98.252.0/24

141.98.254.0/24

45.83.220.0/24

151.241.171.0/24

149.7.107.0/24

195.54.182.0/24

185.217.116.0/24

45.129.56.0/24

185.65.132.0/24

45.129.57.0/24

46.229.255.0/24

193.234.92.0/24

149.5.248.0/24

91.206.168.0/24

185.65.134.0/24

149.5.160.0/24

45.83.221.0/24

194.34.172.0/24

141.98.253.0/24

193.32.127.0/24

185.209.199.0/24

IPv6 Prefixes (21)

2a01:280:330::/48

2a03:1b20:8::/48

2a07:bdc3::/32

2a03:1b20:9::/48

2a03:1b20:b::/48

2a03:1b20:4::/48

2a03:1b20:a::/48

2a03:1b20:7::/48

2a03:1b20:901::/48

2a03:1b20:5::/48

2a07:bdc4::/32

2a03:1b20:d::/48

2a03:1b20:2::/48

2a07:e344::/32

2a03:1b20:3::/48

2a03:1b20:c::/48

2a03:1b20:1::/48

2a03:1b20:bef2::/48

2a03:1b20:6::/48

2a03:1b20:bef1::/48

2a03:1b20::/48

BGP Peers (200)

AS1103SURF B.V.

AS1140Stichting Internet Domeinregistratie Nederland

AS12307Sandro Bolliger trading as Bolliger Network Solutions

AS12637Seeweb s.r.l.

AS12859BIT BV

AS12969Ljósleiðarinn ehf (Sýn)

AS13004Serbian Open Exchange DOO

AS13237euNetworks GmbH

AS142271EWS DS Networks Inc

AS14630Invesco Group Services, Inc.

AS14907Wikimedia Foundation Inc.

AS15547netplus.ch SA

AS10075Fiber@Home Global Limited

AS10099China Unicom Global

AS10122NETSTAR (SG) PTE. LTD.

AS10158Kakao Corp

AS10282GLOBAL ONE

AS10310Yahoo Holdings Inc.

AS11019HAProxy Technologies, Inc.

AS1101SURF (Thunderlab)

AS1103SURF B.V.

AS11179

AS11260EastLink

AS1126Vancis Advanced ICT Services

AS112

AS1136

AS1140Stichting Internet Domeinregistratie Nederland

AS12307Sandro Bolliger trading as Bolliger Network Solutions

AS12637Seeweb s.r.l.

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.