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Autonomous System

AS137831 ยท SEA IX

Overview

AS137831 is announced on the Internet: RIPE RIS route collectors currently see 5 IPv4 prefixes and no IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 1,280 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 43 upstream neighbours (transit providers or peers) and 17 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), StarHub Ltd (AS4657), and SBN-IIG/AWN-IIG transit provider (AS45430). AS137831 was assigned by APNIC, and its registration country is Singapore.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 8:07 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 103.115.79.1, the first address of 103.115.79.0/24. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.

Announced prefixes

IPv4 prefixes (5 prefixes)

PrefixAddresses
103.115.79.0/24256
134.65.84.0/24256
143.92.71.0/24256
143.92.96.0/24256
143.92.108.0/24256

IPv6 prefixes (none)

None currently seen.

Neighbours

Upstreams (transit or peers) (43)

ASNetworkVisibility
AS1299Arelion Sweden AB2,276
AS4657StarHub Ltd1,284
AS45430SBN-IIG/AWN-IIG transit provider1,121
AS4637Telstra Global1,054
AS2914NTT America, Inc.988
AS3356Level 3 Parent, LLC569
AS6939Hurricane Electric LLC531
AS19551Incapsula Inc527
AS17727PT. NAP Info Lintas Nusa477
AS4761INDOSAT Internet Network Provider381
AS56258PT. PGAS TELEKOMUNIKASI NUSANTARA353
AS6461Zayo Bandwidth328
AS63199-271
AS52468UFINET PANAMA S.A.208
AS23884-144
AS45458SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX144
AS35280F5 Networks SARL48
AS9583Sify Limited21
AS15802Emirates Integrated Telecommunications Company PJSC21
AS132132-21
AS17557Pakistan Telecommunication Company Limited10
AS7473Singapore Telecommunications Ltd7
AS6057Administracion Nacional de Telecomunicaciones6
AS138428-5
AS14840BR.Digital Telecom4
AS23764CTGNet4
AS52320GlobeNet Cabos Submarinos Colombia, S.A.S.4
AS137409GSL Networks Pty LTD4
AS4230CLARO S.A.3
AS9304HGC Global Communications Limited2

The 30 most visible of 43.

Downstreams (customers) (17)

ASNetworkVisibility
AS58521Garena Online Pte Ltd2,151
AS138341SHOPEE SINGAPORE PRIVATE LIMITED2,026
AS58816PT Garena Indonesia1,201
AS131435Vietnam Esports and Entertainment Joint Stock Company1,198
AS135445PT. Airpay International Indonesia657
AS142110Northern Point Technology Private Limited647
AS131418SHOPEEPAY JOINT STOCK COMPANY634
AS134592Shopee (Thailand) Co., Ltd.293
AS23884Proen Corp Public Company Limited.287
AS135462PT Shopee International Indonesia287
AS135935Binh Minh Software Service Company Limited287
AS133151-275
AS63733Hoa Thai Software Services Company Limited266
AS134573-261
AS63768Thien Binh Software Service Company Limited254
AS7552Viettel Group135
AS637671st Floor, Machinci Tower, 444 Hoang Hoa Tham, Thuy Khue, Tay Ho, HaNoi18

36 more neighbours appear on both sides of this network depending on the path, so they are counted in neither list.

Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.

How to read this page

An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.

A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.

Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.

The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.