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AS137831SEA IX

SingaporeRegistryAPNICTypeEyeball

As of 11th November 2026, AS137831 (SEA IX), an access network registered in Singapore with APNIC, originates 5 IPv4 prefixes covering 1.3k addresses. By IPv4 address space that makes it the 34,029th-largest of the 80,743 networks we see originating IPv4, and the 201st-largest of 450 in Singapore. It is seen behind 41 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS4637 (Telstra International Limited), and in front of 17 downstream networks. 80% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 80% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

5

IPv6 prefixes

0

IPv4 addresses

1.3k

IPv6 /64s

0

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.AS3356Lumen (Level 3)AS4637Telstra Internati…AS4657StarHub LtdAS13030Init7 (Switzerlan…AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS16552Tiggee LLCAS3549Lumen (fka. Globa…AS32590Valve CorporationAS18106Viewqwest Pte Ltd

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

200

adjacent networks

Upstreams
4121%
Peers
14271%
Downstreams
179%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 41.

Upstreams of AS137831
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer5,38468
AS4637Telstra International LimitedHKPeer2,96060
AS4657StarHub LtdSGPeer2,35951
AS2914NTT America, Inc.USPeer2,06748
AS3356Lumen (Level 3)USPeer1,268115
AS6461Zayo BandwidthUSPeer1,09645
AS45430SBN-IIG/AWN-IIG transit providerTHPeer88676
AS6939Hurricane Electric LLCUSPeer63116
AS7713PT Telkom Indonesia TbkIDPeer4504
AS17727PT NAP Info Lintas NusaIDPeer43774

Prefixes

The largest blocks AS137831 originates, widest first.

Largest prefixes originated by AS137831
PrefixAddressesVisibility
103.115.79.0/2425676/76
134.65.84.0/242569/76
143.92.71.0/2425676/76
143.92.96.0/2425676/76
143.92.108.0/2425676/76

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

  • Valid80.0%4
  • Invalid20.0%1
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more80.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%20.0%1

Prefix sizes

IPv4 — 5 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Withdrawn2402:e340:f::/4814th Oct 2026

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