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AS209300Wende Tan

ChinaRegistryRIPE NCC

As of 11th November 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 59,962nd-largest of the 80,733 networks we see originating IPv4, and the 531st-largest of 617 in China. It is seen behind 7 upstream networks, most often AS20473 (The Constant Company, LLC) and AS8772 (Netassist International EOOD), 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 Interna…AS20473The Constant Comp…AS38255China Education a…AS142650APNIC ASN blockAS212683Olilo UK & Irelan…AS3491PCCW Global (HK) …AS9002RETN LimitedAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS142651APNIC ASN blockAS3170VeloxServ 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

22

adjacent networks

Upstreams
732%
Peers
1359%
Downstreams
29%

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

Upstreams of AS209300
NetworkCountryRelationshipPathsVantage pts
AS20473The Constant Company, LLCUSPeer21362
AS8772Netassist International EOODBGPeer14056
AS212683Olilo UK & Ireland Ltd.GBPeer137137
AS142650APNIC ASN blockAUPeer6262
AS38255China Education and Research Network (CERNET)CNPeer6161
AS45576Tsinghua UniversityCNPeer3636
AS29632Netassist International EOODBGPeer218

Prefixes

The largest blocks AS209300 originates, widest first.

Largest prefixes originated by AS209300
PrefixAddressesVisibility
44.30.120.0/2425676/76
2a05:1085::/324.3B × /6463/63
2404:f4c0:f000::/441M × /6436/63
2404:f4c0:f001::/4865.5k × /6461/63
2404:f4c0:f002::/4865.5k × /6462/63
2a0c:b641:573::/4865.5k × /6461/63

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 12th Oct 2026.

  • Announced2a05:1085::/3225th Oct 2026
  • Withdrawn2a05:1085::/3225th Oct 2026

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