HomeASN LookupAS204921

AS204921

🇬🇧

YunZheng-Network zhenyun sunORG-ZS89-RIPE

Yunzheng.Space Research Network

RIPENCCallocatedASPA Published
Announced Prefixes (BGP)
25total
8 IPv417 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)3,072
Announced (BGP)3,328
IPv6 Addresses ⓘ
Allocated (RIR)6.5×10^26
Announced (BGP)3.8×10^25
Prefix Limit (IPv4)
20
Prefix Limit (IPv6)
100
Country
🇬🇧 GB
RIR
RIPENCC
Status
allocated
Allocated
10/10/2025

Announced Prefixes

(BGP)23
|
Prefix
RPKI
IRR
Last Seen
142.249.114.0/24MOAS
 Invalid—9/10/2026
142.249.115.0/24MOAS
 Invalid—9/10/2026
177.177.80.0/22
 Valid
RIPE
9/10/2026
177.177.80.0/23
 Valid
RIPE
9/10/2026
177.177.80.0/24
 Valid
RIPE
9/10/2026
177.177.81.0/24
 Valid
RIPE
9/10/2026
177.177.82.0/23
 Valid
RIPE
9/10/2026
177.177.83.0/24
 Valid
RIPE
9/10/2026
2602:f3ff:83::/48
 Valid
ARIN
9/10/2026
2a0e:aa07:e250::/44
 Valid
RADBRIPE
9/10/2026
1–10 of 23
1 / 3

Allocated Prefixes

(RIR)23
Prefix
Country
RIR
Status
177.177.80.0/22🇹🇼 TWRIPEassigned
177.177.80.0/23🇹🇼 TWRIPEassigned
177.177.80.0/24🇹🇼 TWRIPEassigned
177.177.81.0/24🇭🇰 HKRIPEassigned
177.177.82.0/23🇹🇼 TWRIPEassigned
177.177.82.0/24🇹🇼 TWRIPEassigned
177.177.83.0/24🇳🇱 NLRIPEassigned
2a0e:aa07:e250::/44🇬🇧 GBRIPEassigned
2a0e:aa07:e251::/48🇯🇵 JPRIPEassigned
2a0e:aa07:e252::/48🇹🇼 TWRIPEassigned
1–10 of 23
1 / 3

Upstream Providers(13)

ASNName
AS6939🇺🇸HURRICANE - Hurricane Electric LLC
AS11421🇺🇸HYWG-BACKBONE - HYW
AS17408🇹🇼ABOVE-AS-AP - AboveNet Communications Taiwan
AS18423RAID-AS-TW - RAID Networks Co., Ltd.
AS36530🇺🇸FUTURE-LAIN - IDC Cube
AS44324🇺🇸MOEDOVE-AS MoeDove LLC
AS51087🇬🇧BLING-AS Bling Network Ltd
AS140096🇭🇰JINX-AS-AP - JINX CO., LIMITED
AS199310🇨🇳QFLink-AS XIN BING XIAN
AS204211🇨🇳LOCYAN-NETWORK-AS Shanghai Yingyun Network Technology Co., Ltd.
AS204844🇬🇧NCSE-NETWORK-Global NCSE NETWORK LTD
AS206216🇺🇸ADVIN-AS Advin Services LLC
AS216211🇺🇸CYBERVERSE-BACKBONE CYBERVERSE LLC

Downstream Customers(4)

ASNName
AS207529🇬🇧NyanLoliNetwork NYANLOLI LTD
AS208223🇹🇼FOXO-AS SHU-HAO TUNG
AS210352🇨🇳YijiaXu Yijia Xu
AS211575🇨🇳RuiNetwork Rui Feng
ASPA
Published13 upstreams, 4 downstreams
Authorized Upstream Providers
AS6939AS11421AS17408AS18423AS36530AS44324AS51087AS140096AS199310AS204211AS204844AS206216AS216211
Expires Sep 12, 2026
Listed as Upstream Provider by
4 ASNs
View full ASPA details →
Abuse Contact
External Links
RIPE WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/204921

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/204921" | jq