subnet.im

AS204535Tan Kok Feng

MalaysiaRegistryRIPE NCCTypeCarrier

As of 24th October 2026, AS204535 (Tan Kok Feng), a transit carrier registered in Malaysia with RIPE NCC, originates 4 IPv4 prefixes covering 1k addresses and 11 IPv6 prefixes. By IPv4 address space that makes it the 35,819th-largest of the 79,642 networks we see originating IPv4, and the 120th-largest of 256 in Malaysia. It is seen behind 3 upstream networks, most often AS206216 (Advin Services LLC) and AS154516 (PERFECT NETWORK SDN. BHD.), and in front of 1 downstream network. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% 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

4

IPv6 prefixes

11

IPv4 addresses

1k

IPv6 /64s

269M

Upstream graph

The networks AS204535 is seen behind, one and two hops out, drawn from real AS paths.

AS204535Toward the internet core
Upstream graph for AS204535: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS204535Tan Kok FengThis networkAS154516PERFECT NETWORK S…AS206216Advin Services LLCAS213891Liu ZhenAS132372GB Network Soluti…AS60068Datacamp Limited …AS137409GSL Networks Pty …AS20473The Constant Comp…AS53667FranTech Solutions

Networks observed one and two hops upstream of AS204535 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

9

adjacent networks

Upstreams
333%
Peers
556%
Downstreams
111%

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

Upstreams of AS204535
NetworkCountryRelationshipPathsVantage pts
AS206216Advin Services LLCUSPeer846138
AS154516PERFECT NETWORK SDN. BHD.MYPeer138138
AS213891Liu ZhenCNPeer6060

Prefixes

The largest blocks AS204535 originates, widest first.

Largest prefixes originated by AS204535
PrefixAddressesVisibility
45.155.242.0/2425675/76
77.216.0.0/2425676/76
89.23.82.0/2425676/76
172.83.188.0/2425675/76
2a12:cb43::/36268M × /6462/63
2a0f:1cc6:bab1::/4865.5k × /6462/63
2a0f:1cc6:bab2::/4865.5k × /6462/63
2a0f:1cc6:bab3::/4865.5k × /6462/63
2a0f:1cc6:bab4::/4865.5k × /6462/63
2a0f:1cc6:bab5::/4865.5k × /6462/63

Routing health

How AS204535'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

  • Valid100.0%15
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%15
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 4 prefixes

IPv6 — 11 prefixes

  • /36268M × /649.1%1
  • /4865.5k × /6490.9%10

Recent changes

Announcements that started or stopped since 24th Sept 2026.

15 announced and 10 withdrawn in all; the most recent are shown.

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