ASN Lookup – Networks, Upstreams and Prefixes

AS204921

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS204921

NameYunZheng-Network

Organisationzhenyun sun

Country –

RIRRIPE NCC

Allocated10.10.2025

Abuse contactnoc@as204921.net

Network Overview

IPv4 Prefixes2

IPv6 Prefixes9

Upstreams IPv410

BGP Peers IPv415

Upstreams (Transit Providers)

IPv4

AS11421 HYWG-BACKBONE

AS199310 QFLink-AS

AS204211 LOCYAN-NETWORK-AS

AS204844 NCSE-NETWORK-Global

AS206216 ADVIN-AS

AS206499 LOCIX

AS216211 CYBERVERSE-BACKBONE

AS25091 IP-Max

AS34549 MEER-AS

AS36530 FUTURE-LAIN

IPv4 Prefixes (2 total)

142.249.114.0/24

142.249.115.0/24

IPv6 Prefixes (9 total)

2a0e:aa07:e250::/44

2a0e:aa07:e254::/48

2a0e:aa07:e256::/48

2a0e:aa07:e257::/48

2a0e:aa07:e253::/48

2a0e:aa07:e252::/48

2a0e:aa07:e251::/48

2a0e:aa07:e258::/48

2a0e:aa07:e259::/48

BGP Peers IPv4 (15 total)

AS207529

AS208223

AS18041

AS207705

AS210937

AS213151

AS24482

AS3214

AS34872

AS38855

AS42541

AS51185

AS58299

AS59105

AS7721

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.