ASN Lookup – Networks, Upstreams and Prefixes

AS23700

ASN

APNIC

RIR

139

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS23700

NameFastnet-AS-ID

Country

RIRAPNIC

Allocated20.08.2019

Abuse contactabuse@firstmedia.com

Network Overview

IPv4 Prefixes139

IPv6 Prefixes18

Upstreams IPv44

BGP Peers IPv47

Upstreams (Transit Providers)

IPv4

AS138077 IDNIC-ABHINAWA-AS-ID

AS14593 SPACEX-STARLINK

AS7632 Linknet-Exchange-AS-ID

AS7717 OPENIXP-AS-ID-AP

IPv4 Prefixes (139 total, showing 20)

140.0.96.0/19

139.255.160.0/19

111.94.224.0/19

139.195.64.0/19

149.110.96.0/19

149.113.128.0/19

140.0.64.0/19

139.195.96.0/19

138.113.251.0/24

140.0.0.0/19

139.228.32.0/19

139.0.224.0/19

139.228.224.0/19

149.108.96.0/19

111.95.0.0/19

139.194.0.0/16

139.194.96.0/19

149.108.128.0/19

111.94.32.0/19

139.228.160.0/19

IPv6 Prefixes (18 total, showing 10)

2404:5600:1005::/48

2404:5600::/32

2404:5600:100b::/48

2404:5600:1002::/48

2404:5600:100d::/48

2404:5600:1000::/48

2404:5600:100a::/48

2404:5600:d000::/40

2404:5600:1003::/48

2404:5600:100f::/48

BGP Peers IPv4 (7 total)

AS138077

AS138839

AS139341

AS54994

AS9905

AS24482

AS35280

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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.