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

AS23352

ASN

ARIN

RIR

112

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS23352

NameSERVERCENTRAL

OrganisationDEFT.COM

Country –

RIRARIN

Allocated05.03.2002

Network Overview

IPv4 Prefixes112

IPv6 Prefixes24

Upstreams (Transit)17

Downstreams (Customers)32

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS13649Flexential Colorado Corp.AS13786Seaborn (Seabras USA, LLC)AS174Cogent Communications, LLC AS262287Latitude.sh LTDA AS286GTT Communications Inc.AS2914NTT America, Inc.+11

AS23352SERVERCENTRAL

Downstreams (Customers)

AS10493Grand Central Networks Inc.AS11621Reyes Holdings, L.L.C.AS19255YOUR.ORG, INC.AS19557CHANGEIP COM AS20130Depaul University AS22075Outbrain, Inc.+26

Upstreams (Transit) (17)

AS13649Flexential Colorado Corp.

AS13786Seaborn (Seabras USA, LLC)

AS174Cogent Communications, LLC

AS262287Latitude.sh LTDA

AS286GTT Communications Inc.

AS2914NTT America, Inc.

AS30081CacheFly

AS3223Voxility LLP

AS3257GTT Communications Inc.

AS3491PCCW Global (HK) Ltd.

AS4637Telstra International Limited

AS6453TATA Communications (America) Inc

Downstreams (Customers) (32)

AS10493Grand Central Networks Inc.

AS11621Reyes Holdings, L.L.C.

AS19255YOUR.ORG, INC.

AS19557CHANGEIP COM

AS20130Depaul University

AS22075Outbrain, Inc.

AS23028Team Cymru Inc.

AS25657Basecamp, LLC

AS25773RADWARE INC.

AS26052Fortis Clearing Chicago LLC

AS26943YOUR.ORG, INC.

AS30081CacheFly

IPv4 Prefixes (112)

216.246.47.0/24

75.102.8.0/23

205.234.220.0/24

204.93.254.0/24

130.51.81.0/24

66.225.212.0/24

75.102.40.0/21

216.246.124.0/24

204.93.192.0/19

50.31.224.0/21

216.246.125.0/24

205.234.128.0/17

216.246.73.0/24

66.225.235.0/24

103.211.253.0/24

103.211.252.0/23

66.225.246.0/24

66.225.245.0/24

50.31.128.0/18

205.234.146.0/24

204.93.134.0/24

72.5.146.0/24

167.88.144.0/20

192.190.47.0/24

192.206.92.0/24

199.30.216.0/23

75.102.4.0/24

158.120.80.0/22

204.93.252.0/23

64.202.96.0/19

50.31.248.0/21

216.246.76.0/22

50.31.188.0/24

66.225.244.0/24

66.225.210.0/23

205.234.191.0/24

216.246.60.0/22

204.93.248.0/24

205.234.167.0/24

50.31.244.0/22

205.234.221.0/24

216.246.0.0/17

204.93.193.0/24

50.31.152.0/24

75.102.56.0/22

50.31.232.0/21

147.160.158.0/24

50.31.172.0/22

50.31.208.0/20

170.10.71.0/24

204.93.128.0/17

50.31.192.0/20

50.31.248.0/24

103.2.140.0/22

206.51.240.0/21

50.31.140.0/22

75.102.36.0/23

130.51.80.0/24

208.93.68.0/22

205.234.193.0/24

66.235.126.0/23

205.234.219.0/24

103.211.252.0/24

204.93.248.0/22

216.246.84.0/22

203.31.36.0/22

66.225.216.0/22

205.234.160.0/24

64.202.119.0/24

204.93.190.0/23

216.246.112.0/22

50.31.220.0/22

167.88.154.0/24

216.246.36.0/22

216.246.116.0/24

66.225.192.0/18

204.93.160.0/20

204.93.152.0/21

50.31.168.0/24

68.71.141.0/24

104.245.208.0/21

75.102.60.0/22

104.245.215.0/24

216.246.46.0/24

216.246.66.0/23

50.31.174.0/24

204.93.203.0/24

204.93.188.0/23

216.246.98.0/24

204.93.255.0/24

204.93.240.0/21

50.31.176.0/24

204.209.73.0/24

204.93.247.0/24

208.93.64.0/21

192.145.108.0/23

64.202.97.0/24

205.234.198.0/24

75.102.0.0/18

66.235.124.0/23

204.93.254.0/23

158.120.84.0/22

208.93.64.0/22

75.102.52.0/22

66.235.122.0/23

64.202.120.0/24

64.202.104.0/24

204.93.176.0/21

50.31.128.0/17

75.102.22.0/24

75.102.57.0/24

216.246.127.0/24

IPv6 Prefixes (24)

2001:1838:3000::/40

2001:1838:6000::/36

2001:1838:2012::/48

2001:1838:c000::/40

2001:1838:9000::/40

2001:1838:2000::/36

2602:f923::/36

2001:1838:2007::/48

2001:1838:d000::/40

2001:1838:1000::/40

2001:1838:1500::/40

2001:1838:1000::/36

2001:1838:8000::/40

2a05:3cc0:1000::/48

2607:4440::/48

2001:1838:7000::/36

2001:1838:6003::/48

2001:1838::/32

2001:1838:4000::/36

2001:1838:5000::/36

2001:1838:100a::/48

2001:1838:a000::/40

2001:1838:3000::/36

2001:1838:5000::/40

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.