subnet.im

AS209300Wende Tan

ChinaRegistryRIPE NCC

As of 26th September 2026, AS209300 (Wende Tan), a network registered in China with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 59,122nd-largest of the 79,516 networks we see originating IPv4, and the 525th-largest of 607 in China. It is seen behind 7 upstream networks, most often AS20473 (The Constant Company, LLC) and AS212683 (Olilo UK & Ireland Ltd.), and in front of 2 downstream networks. 83% 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 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

1

IPv6 prefixes

5

IPv4 addresses

256

IPv6 /64s

4.3B

Upstream graph

The networks AS209300 is seen behind, one and two hops out, drawn from real AS paths.

AS209300Toward the internet core
Upstream graph for AS209300: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS209300Wende TanThis networkAS8772NetAssist LLCAS20473The Constant Comp…AS29632Netassist Interna…AS38255China Education a…AS212683Olilo UK & Irelan…AS3491PCCW Global (HK) …AS9002RETN LimitedAS2914NTT America, Inc.AS1299Arelion (fka. Tel…AS13030Init7 (Switzerlan…AS3170VeloxServ Communi…AS3257GTT Communication…

Networks observed one and two hops upstream of AS209300 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

20

adjacent networks

Upstreams
735%
Peers
1155%
Downstreams
210%

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

Upstreams of AS209300
NetworkCountryRelationshipPathsVantage pts
AS20473The Constant Company, LLCUSPeer22066
AS212683Olilo UK & Ireland Ltd.GBPeer141141
AS8772NetAssist LLCUAPeer10241
AS29632Netassist International EOODBGPeer6524
AS142650APNIC ASN blockAUPeer6363
AS38255China Education and Research Network (CERNET)CNPeer6363
AS45576Tsinghua UniversityCNPeer3838

Prefixes

The largest blocks AS209300 originates, widest first.

Largest prefixes originated by AS209300
PrefixAddressesVisibility
44.30.120.0/2425681/81
2a05:1085::/324.3B × /6464/64
2404:f4c0:f000::/441M × /6438/64
2404:f4c0:f001::/4865.5k × /6463/64
2404:f4c0:f002::/4865.5k × /6463/64
2a0c:b641:573::/4865.5k × /6462/64

Routing health

How AS209300'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

  • Valid83.3%5
  • Invalid0.0%0
  • No ROA16.7%1

Propagation

  • Globally propagated90% of full-feed peers or more83.3%5
  • Partially propagated40% to 90%16.7%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 5 prefixes

  • /324.3B × /6420.0%1
  • /441M × /6420.0%1
  • /4865.5k × /6460.0%3

Recent changes

Announcements that started or stopped since 27th Aug 2026.

No announcement by AS209300 started or stopped in this period.

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