subnet.im

AS18409Bank of Thailand, Bangkok, Thailand

ThailandRegistryAPNIC

As of 29th September 2026, AS18409 (Bank of Thailand, Bangkok, Thailand), a network registered in Thailand with APNIC, originates 3 IPv4 prefixes covering 768 addresses and 4 IPv6 prefixes. By IPv4 address space that makes it the 44,955th-largest of the 79,607 networks we see originating IPv4, and the 202nd-largest of 457 in Thailand. It is seen behind 3 upstream networks, most often AS45458 (SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX) and AS4651 (The Communications Authority of…). None of its announcements have a valid RPKI ROA. 57% of its routes reach at least 90% of full-feed peers, and 3 prefixes are also originated by another network.

At a glance

IPv4 prefixes

3

IPv6 prefixes

4

IPv4 addresses

768

IPv6 /64s

4.3B

Upstream graph

The networks AS18409 is seen behind, one and two hops out, drawn from real AS paths.

AS18409Toward the internet core
Upstream graph for AS18409: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS18409Bank of Thailand,…This networkAS4651The Communication…AS45458SBN-ISP/AWN-ISP a…AS132280Symphony Communic…AS2914NTT America, Inc.AS6939Hurricane Electri…AS23884Proen Corp Public…AS45430SBN-IIG/AWN-IIG t…AS45629JasTel Network In…AS132876Symphony Communic…

Networks observed one and two hops upstream of AS18409 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS18409
NetworkCountryRelationshipPathsVantage pts
AS45458SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIXTHPeer235133
AS4651The Communications Authority of Thailand (CAT)THPeer146146
AS132280Symphony Communication (Thailand) PCL.THPeer8282

Prefixes

The largest blocks AS18409 originates, widest first.

Largest prefixes originated by AS18409
PrefixAddressesVisibility
202.90.4.0/2425682/82
202.90.6.0/2425682/82
202.90.7.0/2425682/82
2404:e680::/324.3B × /6451/65
2404:e680:1101::/4865.5k × /6451/65
2404:e680:1120::/4865.5k × /6451/65
2404:e680:1140::/4865.5k × /6464/65

Routing health

How AS18409'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%7

Propagation

  • Globally propagated90% of full-feed peers or more57.1%4
  • Partially propagated40% to 90%42.9%3
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

IPv6 — 4 prefixes

  • /324.3B × /6425.0%1
  • /4865.5k × /6475.0%3

Recent changes

Announcements that started or stopped since 30th Aug 2026.

No announcement by AS18409 started or stopped in this period.

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