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AS137831SEA IX

SingaporeRegistryAPNICTypeEyeball

As of 27th September 2026, AS137831 (SEA IX), an access network registered in Singapore with APNIC, originates 5 IPv4 prefixes covering 1.3k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 33,367th-largest of the 79,525 networks we see originating IPv4, and the 199th-largest of 446 in Singapore. It is seen behind 43 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS4637 (Telstra International Limited), and in front of 17 downstream networks. 67% of its announcements have a valid RPKI ROA; 2 are RPKI-invalid. 67% 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

5

IPv6 prefixes

1

IPv4 addresses

1.3k

IPv6 /64s

65.5k

Upstream graph

The networks AS137831 is seen behind, one and two hops out, drawn from real AS paths.

AS137831Toward the internet core
Upstream graph for AS137831: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS137831SEA IXThis networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS4637Telstra Internati…AS4657StarHub LtdAS6461Zayo BandwidthAS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS3130RGnet OUAS49544i3D.net B.VAS16552Tiggee LLCAS18106Viewqwest Pte LtdAS32590Valve Corporation

Networks observed one and two hops upstream of AS137831 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

199

adjacent networks

Upstreams
4322%
Peers
13970%
Downstreams
179%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 43.

Upstreams of AS137831
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer5,24070
AS4637Telstra International LimitedHKPeer3,00754
AS4657StarHub LtdSGPeer2,45156
AS2914NTT America, Inc.USPeer2,36352
AS6461Zayo BandwidthUSPeer1,15050
AS3356Lumen (Level 3)USPeer1,112108
AS45430SBN-IIG/AWN-IIG transit providerTHPeer90881
AS6939Hurricane Electric LLCUSPeer63720
AS17727PT NAP Info Lintas NusaIDPeer47279
AS7713PT Telkom Indonesia TbkIDPeer4384

Prefixes

The largest blocks AS137831 originates, widest first.

Largest prefixes originated by AS137831
PrefixAddressesVisibility
103.115.79.0/2425681/81
134.65.84.0/2425610/81
143.92.71.0/2425681/81
143.92.96.0/2425681/81
143.92.108.0/2425681/81
2402:e340:f::/4865.5k × /643/64

Routing health

How AS137831'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%4
  • Invalid33.3%2
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more66.7%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%33.3%2

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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