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Tool
ASN Lookup
Networks, upstreams, peers and prefixes of an autonomous system
AS131958
ASN
APNIC
RIR
6
IPv4 Prefixes
1
IPv6 Prefixes
AS Information
ASNAS131958
Namet-net
Country JP JP
RIRAPNIC
Network Overview
IPv4 Prefixes6
IPv6 Prefixes1
Upstreams IPv410
BGP Peers IPv468
Upstreams (Transit Providers)
IPv4
AS1031 PEER1-1031
AS1267 ASN-WINDTRE
AS12779 ITGATE
AS13194 BITE
AS137409 GSLNETWORKS-AS-AP
AS15576 NTS
AS15802 DU-AS1
AS15958 CETIN_doo_AS
AS1764 NEXTLAYER-AS
AS20485 TRANSTELECOM
IPv4 Prefixes (6 total)
133.238.64.0/18
103.144.122.0/23
202.233.72.0/22
157.14.64.0/20
133.32.192.0/21
133.226.176.0/21
IPv6 Prefixes (1 total)
2405:6cc0::/32
BGP Peers IPv4 (68 total, showing 20)
AS1103
AS1140
AS12637
AS12859
AS12969
AS13237
AS14630
AS14907
AS15547
AS15605
AS16347
AS17639
AS18106
AS1828
AS198150
AS199524
AS199938
AS207841
AS20932
AS212483
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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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