AS204921 zhenyun sun 🇬🇧 GB
Announcing 25 prefixes, seen at the RIS collectors.
IPv4 prefixes
6
2,816 (11 × /24)
IPv6 prefixes
19
34 × /48
Upstreams
15
transit providers observed
Peers
7
settlement-free adjacencies
Downstreams
1
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS204921
- Name
- zhenyun sun
- Organisation
- ZHENYUN VNET RESEARCH NETZ
- Country
- 🇬🇧 GB
- RIR
- RIPENCC
- Allocated
- 2025-10-10
- Network type
- Educational/Research
- Traffic levels
- 10-20Gbps
- Scope
- Global
- Peering policy
- Open
- IRR as-set
- RADB::AS-YUNZHENG
- Website
- https://as204921.net
- Looking glass
- https://lg.yunzheng.space/
- PeeringDB
- net/40543
- Exchanges
- 11
- Facilities
- 4
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS20473 The Constant Company, LLC | 🇺🇸 US | 17,248 | 1,854 | 69 | inferred |
| AS10133 Chief Telecom Inc. | 🇹🇼 TW | 359 | 0 | 2 | inferred |
| AS18423 RAID Networks Co., Ltd. | 🇹🇼 TW | 81 | 2 | 114 | CAIDA |
| AS40792 CYBERVERSE | 🇺🇸 US | 70 | 0 | 2 | CAIDA |
| AS216211 CYBERVERSE LLC | 🇺🇸 US | 69 | 20 | 34 | CAIDA |
| AS44324 MoeDove LLC | 🇺🇸 US | 28 | 4 | 85 | inferred |
| AS11967 Hop179 OU | 🇪🇪 EE | 17 | 5 | 150 | inferred |
| AS36530 IDC Cube | 🇺🇸 US | 13 | 19 | 63 | CAIDA |
| AS140096 JINX CO., LIMITED | 🇭🇰 HK | 5 | 15 | 46 | inferred |
| AS204211 Shanghai Yingyun Network Technology Co., Ltd. | 🇨🇳 CN | 5 | 1 | 41 | CAIDA |
| AS204539 Axivora Connect Ltd | 🇬🇧 GB | 4 | 1 | 42 | inferred |
| AS209554 ISIF OU | 🇪🇪 EE | 2 | 30 | 35 | inferred |
| AS51087 Bling Network Ltd | 🇬🇧 GB | 2 | 2 | 32 | CAIDA |
| AS199310 XIN BING XIAN | 🇨🇳 CN | 0 | 1 | 60 | inferred |
| AS56662 Marcin Gondek | 🇵🇱 PL | 0 | 0 | 1 | inferred |
Peers
Adjacencies that look settlement-free rather than transit
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS6939 Hurricane Electric LLC | 🇺🇸 US | 53,567 | 235 | 164 | CAIDA |
| AS31500 Global Network Management Inc | 🇦🇬 AG | 20,910 | 40 | 1 | CAIDA |
| AS34549 meerfarbig GmbH & Co. KG | 🇩🇪 DE | 15,442 | 48 | 2 | CAIDA |
| AS24482 SG.GS | 🇸🇬 SG | 4,747 | 45 | 14 | CAIDA |
| AS206499 LOCIX LIMITED | 🇬🇧 GB | 4 | 3 | 6 | CAIDA |
| AS401753 BIXCE Inc | 🇻🇬 VG | 2 | 1 | 13 | CAIDA |
| AS38855 STUIX Route Servers | 🇹🇼 TW | 0 | 0 | 13 | CAIDA |
Downstreams
Networks this one appears to provide transit to
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS208223 SHU-HAO TUNG | 🇹🇼 TW | 0 | 3 | 33 | inferred |
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.