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AS37992Thammasat University in thailand

ThailandRegistryAPNICTypeEyeball

As of 23rd October 2026, AS37992 (Thammasat University in thailand), an access network registered in Thailand with APNIC, originates 33 IPv4 prefixes covering 14.3k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 8,653rd-largest of the 79,652 networks we see originating IPv4, and the 52nd-largest of 454 in Thailand. It is seen behind 2 upstream networks, most often AS7470 (TRUE INTERNET Co.,Ltd.) and AS4621 (UniNet Thailand). 67% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 92% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

33

IPv6 prefixes

3

IPv4 addresses

14.3k

IPv6 /64s

4.3B

Upstream graph

The networks AS37992 is seen behind, one and two hops out, drawn from real AS paths.

AS37992Toward the internet core
Upstream graph for AS37992: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS37992Thammasat Univers…This networkAS4621UniNet ThailandAS7470TRUE INTERNET Co.…AS4651The Communication…AS24475ThaiREN.Thailand …AS10089Total Access Comm…AS38082True Internationa…

Networks observed one and two hops upstream of AS37992 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 AS37992
NetworkCountryRelationshipPathsVantage pts
AS7470TRUE INTERNET Co.,Ltd.THPeer2,037140
AS4621UniNet ThailandTHPeer51077

Prefixes

All 36

The largest blocks AS37992 originates, widest first.

Largest prefixes originated by AS37992
PrefixAddressesVisibility
203.131.208.0/204.1k77/77
203.131.208.0/2351277/77
203.131.210.0/2351277/77
203.131.212.0/2351277/77
203.131.214.0/2351277/77
203.131.216.0/2351277/77
203.131.218.0/2351277/77
203.131.220.0/2351277/77
203.131.222.0/2351277/77
61.90.234.0/2425677/77

Routing health

How AS37992'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

  • Valid66.7%24
  • Invalid0.0%0
  • No ROA33.3%12

Propagation

  • Globally propagated90% of full-feed peers or more91.7%33
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%8.3%3

Prefix sizes

IPv4 — 33 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6433.3%1
  • /4865.5k × /6466.7%2

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS37992 started or stopped in this period.

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