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AS3839Chulalongkorn University

ThailandRegistryAPNIC

As of 23rd October 2026, AS3839 (Chulalongkorn University), a network registered in Thailand with APNIC, originates 7 IPv4 prefixes covering 67.1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 3,312th-largest of the 79,666 networks we see originating IPv4, and the 32nd-largest of 454 in Thailand. It is seen behind 2 upstream networks, most often AS4621 (UniNet Thailand) and AS55808 (Advanced Wireless Network Company…). 13% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

7

IPv6 prefixes

1

IPv4 addresses

67.1k

IPv6 /64s

65.5k

Upstream graph

The networks AS3839 is seen behind, one and two hops out, drawn from real AS paths.

AS3839Toward the internet core
Upstream graph for AS3839: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS3839Chulalongkorn Uni…This networkAS4621UniNet ThailandAS55808Advanced Wireless…AS4651The Communication…AS24475ThaiREN.Thailand …AS45758Advanced Wireless…

Networks observed one and two hops upstream of AS3839 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS3839
NetworkCountryRelationshipPathsVantage pts
AS4621UniNet ThailandTHPeer511140
AS55808Advanced Wireless Network Company LimitedTHPeer9177

Prefixes

The largest blocks AS3839 originates, widest first.

Largest prefixes originated by AS3839
PrefixAddressesVisibility
161.200.0.0/1665.5k77/77
161.200.188.0/2425677/77
161.200.189.0/2425677/77
161.200.190.0/2425677/77
161.200.191.0/2425677/77
192.207.64.0/2425677/77
202.6.90.0/2425677/77
2001:3c8:1401::/4865.5k × /6463/64

Routing health

How AS3839'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

  • Valid12.5%1
  • Invalid0.0%0
  • No ROA87.5%7

Propagation

  • Globally propagated90% of full-feed peers or more100.0%8
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 7 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS3839 started or stopped in this period.

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