subnet.im

AS204211Shanghai Yingyun Network Technology Co., Ltd.

ChinaRegistryRIPE NCCTypeEyeball

As of 28th September 2026, AS204211 (Shanghai Yingyun Network Technology…), an access network registered in China with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 11 IPv6 prefixes. By IPv4 address space that makes it the 59,155th-largest of the 79,556 networks we see originating IPv4, and the 525th-largest of 607 in China. It is seen behind 17 upstream networks, most often AS206069 (Cornseed Limited) and AS174 (Cogent Communications, LLC), and in front of 11 downstream networks. 92% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 83% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

1

IPv6 prefixes

11

IPv4 addresses

256

IPv6 /64s

721k

Upstream graph

The networks AS204211 is seen behind, one and two hops out, drawn from real AS paths.

AS204211Toward the internet core
Upstream graph for AS204211: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS204211Shanghai Yingyun …This networkAS174Cogent Communicat…AS6939Hurricane Electri…AS44324MoeDove LLCAS206069Cornseed LimitedAS210352Yijia XuAS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS140227Hong Kong Communi…AS216211CYBERVERSE LLCAS40792CYBERVERSE

Networks observed one and two hops upstream of AS204211 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

74

adjacent networks

Upstreams
1723%
Peers
4662%
Downstreams
1115%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS204211
NetworkCountryRelationshipPathsVantage pts
AS206069Cornseed LimitedGBPeer1,358142
AS174Cogent Communications, LLCUSPeer80661
AS6939Hurricane Electric LLCUSPeer13759
AS44324MoeDove LLCUSPeer12765
AS210352Yijia XuCNPeer6565
AS401804Maxwell Telecom LLCUSPeer6161
AS207529NYANLOLI LTDGBPeer5552
AS139317Ningbo Dahuamao Information Technology Co LtdCNPeer4747
AS51087Bling Network LtdGBPeer169
AS25091IP-Max SACHPeer42

Prefixes

The largest blocks AS204211 originates, widest first.

Largest prefixes originated by AS204211
PrefixAddressesVisibility
44.30.171.0/2425682/82
2602:f9f6:450::/4865.5k × /6464/65
2a0a:d685:1e0::/4865.5k × /6464/65
2a0a:d685:1fd::/4865.5k × /644/65
2a12:cb47:ffff::/4865.5k × /6447/65
2a14:7586:6103::/4865.5k × /6465/65
2a14:7586:6104::/4865.5k × /6464/65
2a14:7586:6106::/4865.5k × /6464/65
2a14:7586:6107::/4865.5k × /6465/65
2a14:7586:6108::/4865.5k × /6464/65

Routing health

How AS204211's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid91.7%11
  • Invalid0.0%0
  • No ROA8.3%1

Propagation

  • Globally propagated90% of full-feed peers or more83.3%10
  • Partially propagated40% to 90%8.3%1
  • Seen by few peersUnder 40%8.3%1

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 11 prefixes

  • /4865.5k × /64100.0%11

Recent changes

Announcements that started or stopped since 29th Aug 2026.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.