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Autonomous System

AS10158 ยท Kakao Corp

Overview

AS10158 is announced on the Internet: RIPE RIS route collectors currently see 23 IPv4 prefixes and 6 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 5,888 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 52 upstream neighbours (transit providers or peers) and 4 downstream neighbours (customers or networks it carries). Its most visible upstreams are Telstra Global (AS4637), PCCW Global (HK) Ltd. (AS3491), and SK Broadband Co Ltd (AS9318). AS10158 was assigned by APNIC, and its registration country is South Korea.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:56 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 139.150.0.1, the first address of 139.150.0.0/22. 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 (23 prefixes)

PrefixAddresses
103.27.150.0/23512
103.27.150.0/24256
103.27.151.0/24256
113.61.106.0/23512
113.61.106.0/24256
113.61.107.0/24256
139.150.0.0/221,024
139.150.4.0/221,024
139.150.4.0/24256
139.150.5.0/24256
139.150.6.0/24256
139.150.7.0/24256
210.103.240.0/24256
210.103.241.0/24256
210.103.242.0/24256
210.103.243.0/24256
210.103.244.0/24256
210.103.245.0/24256
210.103.246.0/24256
210.103.247.0/24256
211.176.34.0/24256
211.183.250.0/24256
211.231.96.0/24256

IPv6 prefixes (6 prefixes)

Prefix
2404:4600::/32
2404:4600:bd::/48
2404:4600:c3::/48
2404:4600:c4::/48
2404:4600:dc3::/48
2404:4600:dc4::/48

Neighbours

Upstreams (transit or peers) (52)

ASNetworkVisibility
AS4637Telstra Global1,450
AS3491PCCW Global (HK) Ltd.1,040
AS9318SK Broadband Co Ltd807
AS1299Arelion Sweden AB506
AS6939Hurricane Electric LLC31
AS2516KDDI CORPORATION10
AS5405Inter.link GmbH6
AS8220COLT Technology Services Group Limited6
AS25091IP-Max SA6
AS29169GANDI SAS6
AS34549meerfarbig GmbH & Co. KG6
AS34927iFog GmbH6
AS35625Eurofiber France SAS6
AS8758-4
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC4
AS14840BR.Digital Telecom4
AS20764CJSC RASCOM4
AS24961WIIT AG4
AS29075IELO-LIAZO SERVICES SAS4
AS29691-4
AS34177Celeste SAS4
AS3935131173 Services AB4
AS41327Fiber Telecom S.p.A.4
AS48362Stadtwerke Feldkirch4
AS8298IPng Networks GmbH3
AS33891Core-Backbone GmbH3
AS43727JSC KVANT-TELEKOM3
AS137409GSL Networks Pty LTD3
AS1267WIND TRE S.P.A.2
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH2

The 30 most visible of 52.

Downstreams (customers) (4)

ASNetworkVisibility
AS38099Kakao Corp913
AS7625Kakao Corp812
AS18160Kakao Corp542
AS152199Kakao Corp542

63 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.