ASN Lookup – Networks, Upstreams and Prefixes

AS133111

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS133111

NameCNT-northChina

OrganisationCERNET New Technology Co., Ltd

Country

RIRAPNIC

Allocated23.05.2019

Abuse contactyujj@cernet.com

Network Overview

IPv4 Prefixes8

IPv6 Prefixes3

Upstreams IPv43

BGP Peers IPv49

Upstreams (Transit Providers)

IPv4

AS23910 CNGI-CERNET2-AS-AP

AS4538 ERX-CERNET-BKB

AS9808 CHINAMOBILE-CN

IPv4 Prefixes (8 total)

103.81.200.0/22

42.201.32.0/19

42.245.221.0/24

42.201.33.0/24

43.252.48.0/24

42.201.62.0/23

42.245.192.0/18

42.201.60.0/23

IPv6 Prefixes (3 total)

240d:4000::/21

2403:a200:9999::/48

2400:a980::/29

BGP Peers IPv4 (9 total)

AS17428

AS17429

AS37936

AS45090

AS55641

AS55990

AS59019

AS59073

AS59078

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.