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Autonomous System

AS138195 · MOACK.Co.LTD

Overview

AS138195 is announced on the Internet: RIPE RIS route collectors currently see 185 IPv4 prefixes and 4 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 118,784 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 12 upstream neighbours (transit providers or peers) and 21 downstream neighbours (customers or networks it carries). Its most visible upstreams are Yancy Limited (AS138415), JINX CO., LIMITED (AS150684), and LG DACOM Corporation (AS3786). AS138195 was assigned by APNIC, and its registration country is South Korea.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:26 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 106.49.64.1, the first address of 106.49.64.0/18. 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 (185 prefixes)

PrefixAddresses
23.248.246.0/24256
27.0.192.0/24256
27.0.193.0/24256
27.0.194.0/24256
27.0.195.0/24256
43.243.220.0/24256
43.243.221.0/24256
43.243.222.0/24256
43.243.223.0/24256
45.93.28.0/24256
45.93.29.0/24256
45.93.30.0/24256
45.93.31.0/24256
45.94.68.0/24256
45.94.69.0/24256
45.94.70.0/24256
45.113.160.0/24256
45.113.161.0/24256
45.113.162.0/24256
45.113.163.0/24256
45.116.212.0/24256
45.116.213.0/24256
45.116.214.0/24256
45.116.215.0/24256
45.120.184.0/24256
45.120.185.0/24256
45.120.186.0/24256
45.120.187.0/24256
45.141.136.0/24256
45.141.137.0/24256
45.141.138.0/24256
45.141.139.0/24256
45.154.12.0/24256
45.154.13.0/24256
45.154.14.0/24256
45.154.15.0/24256
49.4.128.0/204,096
49.4.144.0/204,096
49.4.176.0/23512
49.128.218.0/24256
58.14.8.0/212,048
61.37.18.0/24256
61.38.17.0/24256
61.110.3.0/24256
61.110.5.0/24256
61.110.23.0/24256
61.110.27.0/24256
61.110.28.0/24256
61.110.30.0/24256
61.111.128.0/24256
61.111.129.0/24256
61.111.130.0/24256
61.111.131.0/24256
61.111.133.0/24256
61.111.244.0/24256
61.111.245.0/24256
61.111.246.0/24256
61.111.247.0/24256
61.111.248.0/24256
61.111.249.0/24256
61.111.250.0/24256
61.111.251.0/24256
61.111.252.0/24256
61.111.253.0/24256
103.13.220.0/24256
103.13.221.0/24256
103.13.222.0/24256
103.57.24.0/24256
103.57.25.0/24256
103.57.26.0/24256
103.57.27.0/24256
103.61.0.0/24256
103.61.1.0/24256
103.61.2.0/24256
103.61.3.0/24256
103.79.52.0/24256
103.79.53.0/24256
103.79.54.0/24256
103.79.55.0/24256
103.80.124.0/24256
103.80.125.0/24256
103.80.126.0/24256
103.80.127.0/24256
103.86.44.0/24256
103.86.45.0/24256
103.86.46.0/24256
103.86.47.0/24256
103.123.160.0/24256
103.123.161.0/24256
103.123.162.0/24256
103.123.163.0/24256
103.127.124.0/24256
103.127.125.0/24256
103.127.126.0/24256
103.127.127.0/24256
103.138.13.0/24256
103.199.103.0/24256
103.208.32.0/24256
103.208.33.0/24256
103.208.34.0/24256

Showing the first 100 of 185, in address order. Complete list on RIPEstat

IPv6 prefixes (4 prefixes)

Prefix
2400:b8c0::/32
2401:e9e0:2000::/36
2404:2040::/32
2a12:bec0:68d::/48

Neighbours

Upstreams (transit or peers) (12)

ASNetworkVisibility
AS138415Yancy Limited3,740
AS150684JINX CO., LIMITED2,256
AS3786LG DACOM Corporation1,702
AS21859Zenlayer Inc293
AS6939Hurricane Electric LLC282
AS60539Huicast Telecom Limited46
AS23764CTGNet22
AS139648PacketStream Korea22
AS9848SEJONG NETWORKS17
AS58453China Mobile International Limited6
AS136897-4
AS9957KINX2

Downstreams (customers) (21)

ASNetworkVisibility
AS205960HDTIDC LIMITED879
AS399195PEG TECH INC809
AS398704STACKS INC509
AS134835Starry Network Limited490
AS214432Zhilian Technology CO., LTD.452
AS5893124.hk global BGP413
AS136209CyberForest LLC.321
AS9848SEJONG NETWORKS306
AS63959Hong Kong Syscloud Technology Limited275
AS216047INTECLOUD CDNK LTD272
AS138415-271
AS136800-265
AS139648-265
AS213607WORLD FIRST COMMUNICATION LTD262
AS63902-261
AS133526-260
AS136897-124
AS63473HostHatch, LLC56
AS9957KINX22
AS64050-11
AS141167-4

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.