subnet.im

AS56309Siamdata Communication Co.,Ltd.

ThailandRegistryAPNICTypeEyeball

As of 27th September 2026, AS56309 (Siamdata Communication Co.,Ltd.), an access network registered in Thailand with APNIC, originates 39 IPv4 prefixes covering 33.5k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 5,347th-largest of the 79,525 networks we see originating IPv4, and the 42nd-largest of 456 in Thailand. It is seen behind 6 upstream networks, most often AS45629 (JasTel Network International Gateway) and AS45430 (SBN-IIG/AWN-IIG transit provider), and in front of 4 downstream networks. 91% 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

39

IPv6 prefixes

5

IPv4 addresses

33.5k

IPv6 /64s

4.6B

Upstream graph

The networks AS56309 is seen behind, one and two hops out, drawn from real AS paths.

AS56309Toward the internet core
Upstream graph for AS56309: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS56309Siamdata Communic…This networkAS6939Hurricane Electri…AS45430SBN-IIG/AWN-IIG t…AS45629JasTel Network In…AS137409GSL Networks Pty …AS137557International gat…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS9002RETN LimitedAS24482SG.GSAS6453TATA Communicatio…AS8529Zain Omantel Inte…AS32590Valve Corporation

Networks observed one and two hops upstream of AS56309 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

26

adjacent networks

Upstreams
623%
Peers
1662%
Downstreams
415%

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

Upstreams of AS56309
NetworkCountryRelationshipPathsVantage pts
AS45629JasTel Network International GatewayTHPeer2,609142
AS45430SBN-IIG/AWN-IIG transit providerTHPeer1,390139
AS137557International gateway co., LtdTHPeer601140
AS137409GSL Networks Pty LTDAUPeer8181
AS6939Hurricane Electric LLCUSPeer7463
AS63529Bangkok Neutral Internet Exchange Route ServersTHPeer11

Prefixes

All 44

The largest blocks AS56309 originates, widest first.

Largest prefixes originated by AS56309
PrefixAddressesVisibility
157.85.96.0/204.1k81/81
119.10.136.0/212k81/81
43.228.84.0/221k81/81
43.229.76.0/221k81/81
43.229.132.0/221k81/81
43.229.148.0/221k81/81
45.136.236.0/221k81/81
45.136.252.0/221k81/81
45.144.164.0/221k81/81
45.150.128.0/221k81/81

Routing health

How AS56309'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

  • Valid90.9%40
  • Invalid0.0%0
  • No ROA9.1%4

Propagation

  • Globally propagated90% of full-feed peers or more100.0%44
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 39 prefixes

IPv6 — 5 prefixes

  • /324.3B × /6420.0%1
  • /36268M × /6420.0%1
  • /4865.5k × /6460.0%3

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS56309 started or stopped in this period.

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