subnet.im

AS4618Internet Thailand Company Limited

ThailandRegistryAPNICTypeEyeball

As of 29th September 2026, AS4618 (Internet Thailand Company Limited), an access network registered in Thailand with APNIC, originates 429 IPv4 prefixes covering 761k addresses and 7 IPv6 prefixes. By IPv4 address space that makes it the 554th-largest of the 79,607 networks we see originating IPv4, and the 5th-largest of 457 in Thailand. It is seen behind 6 upstream networks, most often AS4651 (The Communications Authority of…) and AS45629 (JasTel Network International Gateway), and in front of 24 downstream networks. 98% of its announcements have a valid RPKI ROA; 2 are RPKI-invalid. Over 99% 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

429

IPv6 prefixes

7

IPv4 addresses

761k

IPv6 /64s

4.3B

Upstream graph

The networks AS4618 is seen behind, one and two hops out, drawn from real AS paths.

AS4618Toward the internet core
Upstream graph for AS4618: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS4618Internet Thailand…This networkAS4651The Communication…AS38082True Internationa…AS45629JasTel Network In…AS132876Symphony Communic…AS137557International gat…AS58453China Mobile Inte…AS2914NTT America, Inc.AS4637Telstra Internati…AS6939Hurricane Electri…AS45430SBN-IIG/AWN-IIG t…

Networks observed one and two hops upstream of AS4618 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

74

adjacent networks

Upstreams
68%
Peers
4459%
Downstreams
2432%

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

Upstreams of AS4618
NetworkCountryRelationshipPathsVantage pts
AS4651The Communications Authority of Thailand (CAT)THPeer18,225146
AS45629JasTel Network International GatewayTHPeer9,829147
AS132876Symphony Communication (Thailand) PCL.THPeer7,137137
AS137557International gateway co., LtdTHPeer3,30982
AS38082True International Gateway Co., Ltd.THPeer1,28382
AS38040TOT Public Company LimitedTHPeer8080

Prefixes

All 436

The largest blocks AS4618 originates, widest first.

Largest prefixes originated by AS4618
PrefixAddressesVisibility
203.150.0.0/1665.5k82/82
203.151.0.0/1665.5k82/82
203.154.0.0/1665.5k82/82
202.44.192.0/1816.4k82/82
202.44.192.0/198.2k82/82
202.44.224.0/198.2k82/82
203.150.0.0/198.2k82/82
203.150.32.0/198.2k82/82
203.150.64.0/198.2k82/82
203.150.96.0/198.2k82/82

Routing health

How AS4618'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

  • Valid97.7%426
  • Invalid0.5%2
  • No ROA1.8%8

Propagation

  • Globally propagated90% of full-feed peers or more99.5%434
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.5%2

Prefix sizes

IPv4 — 429 prefixes

IPv6 — 7 prefixes

  • /324.3B × /6414.3%1
  • /4865.5k × /6485.7%6

Recent changes

Announcements that started or stopped since 30th Aug 2026.

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