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Tool
ASN Lookup
Networks, upstreams, peers and prefixes of an autonomous system
AS50300
ASN
RIPE NCC
RIR
41
IPv4 Prefixes
8
IPv6 Prefixes
AS Information
ASNAS50300
NameCUSTDC
OrganisationMNT-CUSTODIAN
Country
RIRRIPE NCC
Allocated16.12.2009
Abuse contactabuse@CustodianDC.com
Network Overview
IPv4 Prefixes41
IPv6 Prefixes8
Upstreams IPv410
BGP Peers IPv41145
Upstreams (Transit Providers)
IPv4
AS1031 PEER1-1031
AS1103 SURFNET-NL
AS12552 GlobalConnect-AS12552
AS1267 ASN-WINDTRE
AS13030 INIT7
AS13194 BITE
AS137409 GSLNETWORKS-AS-AP
AS15576 NTS
AS15802 DU-AS1
AS15958 CETIN_doo_AS
IPv4 Prefixes (41 total, showing 20)
176.12.108.0/24
109.74.250.0/24
109.74.241.0/24
109.74.246.0/24
185.32.75.0/24
185.32.72.0/24
185.48.167.0/24
176.12.106.0/24
109.74.240.0/24
185.48.166.0/24
109.74.251.0/24
109.74.242.0/24
109.74.254.0/24
5.102.175.0/24
185.42.65.0/24
5.102.174.0/24
176.12.104.0/24
5.102.172.0/24
185.14.164.0/22
109.74.243.0/24
IPv6 Prefixes (8 total)
2a00:1c10:da2::/48
2a00:1c10:cd0::/44
2a00:1c10:10::/44
2a00:1c10:100::/40
2a00:1c10:fff0::/44
2a00:1c10:30::/44
2a00:1c10:40::/44
2a00:1c10::/44
BGP Peers IPv4 (1145 total, showing 20)
AS31463
AS39103
AS43408
AS48407
AS51926
AS1140
AS12637
AS12779
AS12859
AS12969
AS13237
AS14630
AS14907
AS15547
AS15605
AS16347
AS17639
AS18106
AS1828
AS198150
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.

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