subnet.im

AS4618Internet Thailand Company Limited

ThailandRegistryAPNICTypeEyeball

As of 14th November 2026, AS4618 (Internet Thailand Company Limited), an access network registered in Thailand with APNIC, originates 443 IPv4 prefixes covering 764k addresses and 7 IPv6 prefixes. By IPv4 address space that makes it the 562nd-largest of the 80,840 networks we see originating IPv4, and the 5th-largest of 464 in Thailand. It is seen behind 7 upstream networks, most often AS4651 (The Communications Authority of…) and AS45629 (JasTel Network International Gateway), and in front of 23 downstream networks. 98% of its announcements have a valid RPKI ROA; 2 are RPKI-invalid. 96% 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

443

IPv6 prefixes

7

IPv4 addresses

764k

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: 11 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…AS2914NTT America, Inc.AS7473Singapore Telecom…AS58453China Mobile Inte…AS6939Hurricane Electri…AS3356Lumen (Level 3)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

75

adjacent networks

Upstreams
79%
Peers
4560%
Downstreams
2331%

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

Upstreams of AS4618
NetworkCountryRelationshipPathsVantage pts
AS4651The Communications Authority of Thailand (CAT)THPeer17,825141
AS45629JasTel Network International GatewayTHPeer8,993142
AS132876Symphony Communication (Thailand) PCL.THPeer6,739133
AS137557International gateway co., LtdTHPeer3,17278
AS38082True International Gateway Co., Ltd.THPeer1,09878
AS38040TOT Public Company LimitedTHPeer7878
AS10099China Unicom GlobalHKPeer131

Prefixes

All 450

The largest blocks AS4618 originates, widest first.

Largest prefixes originated by AS4618
PrefixAddressesVisibility
203.150.0.0/1665.5k78/78
203.151.0.0/1665.5k78/78
203.154.0.0/1665.5k78/78
202.44.192.0/1816.4k78/78
202.44.192.0/198.2k78/78
202.44.224.0/198.2k78/78
203.150.0.0/198.2k78/78
203.150.32.0/198.2k78/78
203.150.64.0/198.2k78/78
203.150.96.0/198.2k78/78

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

  • Valid97.8%440
  • Invalid0.4%2
  • No ROA1.8%8

Propagation

  • Globally propagated90% of full-feed peers or more96.2%433
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%3.8%17

Prefix sizes

IPv4 — 443 prefixes

IPv6 — 7 prefixes

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

Recent changes

Announcements that started or stopped since 15th Oct 2026.

17 announced and 4 withdrawn in all; the most recent are shown.

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