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AS39753Kai Liu

ChinaRegistryRIPE NCC

As of 11th November 2026, AS39753 (Kai Liu), a network registered in China with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 15 IPv6 prefixes. By IPv4 address space that makes it the 59,988th-largest of the 80,763 networks we see originating IPv4, and the 532nd-largest of 618 in China. It is seen behind 11 upstream networks, most often AS35661 (VIRTUA SYSTEMS SAS) and AS38074 (SDCC Japan-West Area). 94% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 69% 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

15

IPv4 addresses

256

IPv6 /64s

983k

Upstream graph

The networks AS39753 is seen behind, one and two hops out, drawn from real AS paths.

AS39753Toward the internet core
Upstream graph for AS39753: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS39753Kai LiuThis networkAS8849Melbikomas UABAS35661VIRTUA SYSTEMS SASAS38074SDCC Japan-West A…AS53356Free Range Cloud …AS206628Tianyu-ZhuAS4637Telstra Internati…AS1299Arelion (fka. Tel…AS59103SoftEther Corpora…AS150363SoftEther Corpora…AS6939Hurricane Electri…AS807FORK SYSTEMSAS400212VergeTel Group LLC

Networks observed one and two hops upstream of AS39753 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

29

adjacent networks

Upstreams
1138%
Peers
1862%
Downstreams
00%

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

Upstreams of AS39753
NetworkCountryRelationshipPathsVantage pts
AS35661VIRTUA SYSTEMS SASFRPeer24361
AS38074SDCC Japan-West AreaJPPeer19163
AS53356Free Range Cloud Hosting Inc.CAPeer12561
AS206628Tianyu-ZhuUSPeer6462
AS8849Melbikomas UABLTPeer5516
AS8772Netassist International EOODBGPeer4848
AS218569Viktor NesmeianovRUPeer3427
AS29632Netassist International EOODBGPeer44
AS215685Maik SussdorfDEPeer32
AS39249Netassist International EOODBGPeer22

Prefixes

The largest blocks AS39753 originates, widest first.

Largest prefixes originated by AS39753
PrefixAddressesVisibility
160.72.221.0/242562/77
2406:840:f100::/4865.5k × /6461/63
2602:fb08::/4865.5k × /6461/63
2602:fb08:2::/4865.5k × /6428/63
2602:fed2:7020::/4865.5k × /6461/63
2602:fed2:7021::/4865.5k × /6421/63
2602:fed2:7023::/4865.5k × /6461/63
2602:feda:ca1::/4865.5k × /6462/63
2a0d:2406:510::/4865.5k × /6463/63
2a0d:2406:511::/4865.5k × /6463/63

Routing health

How AS39753'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

  • Valid93.8%15
  • Invalid0.0%0
  • No ROA6.3%1

Propagation

  • Globally propagated90% of full-feed peers or more68.8%11
  • Partially propagated40% to 90%6.3%1
  • Seen by few peersUnder 40%25.0%4

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 15 prefixes

  • /4865.5k × /64100.0%15

Recent changes

Announcements that started or stopped since 12th Oct 2026.

7 announced and 7 withdrawn in all; the most recent are shown.

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