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Autonomous System

AS18041 ยท Taiwan Digital Streaming Co.

Overview

AS18041 is announced on the Internet: RIPE RIS route collectors currently see 16 IPv4 prefixes and 14 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 3,328 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 7 upstream neighbours (transit providers or peers) and 72 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Flag Telecom UK Limited (AS15412), and GSL Networks Pty LTD (AS137409). AS18041 was assigned by APNIC, and its registration country is Taiwan.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:01 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 103.147.22.1, the first address of 103.147.22.0/23. 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 (16 prefixes)

PrefixAddresses
103.147.22.0/23512
103.147.22.0/24256
103.158.186.0/24256
103.220.218.0/23512
103.220.219.0/24256
103.236.226.0/23512
103.236.226.0/24256
103.236.227.0/24256
157.15.32.0/23512
157.15.32.0/24256
157.15.33.0/24256
210.79.150.0/23512
210.79.150.0/24256
211.76.180.0/23512
211.76.180.0/24256
211.76.181.0/24256

IPv6 prefixes (14 prefixes)

Prefix
2400:70e0::/32
2401:a60::/32
2401:16a0::/32
2401:55a0::/32
2401:55e0::/32
2401:7a60::/32
2405:a640::/32
2406:840:f337::/48
2406:bfc0::/32
2406:ee40::/32
2602:faad:3::/48
2a06:a005:500::/44
2a0e:b107:1310::/44
2a0f:607:1051::/48

Neighbours

Upstreams (transit or peers) (7)

ASNetworkVisibility
AS6939Hurricane Electric LLC3,702
AS15412Flag Telecom UK Limited1,540
AS137409GSL Networks Pty LTD1,494
AS207705Jyun-Kai Hu659
AS174Cogent Communications, LLC231
AS10133Chief Telecom Inc.18
AS7713PT Telekomunikasi Indonesia6

Downstreams (customers) (72)

ASNetworkVisibility
AS44324MoeDove LLC536
AS32595Liberally Network, LLC532
AS983Akari Networks LLC405
AS207468lihengyu Li Heng Yu326
AS149791StarVerse Network Ltd.325
AS199073IMPLETECH LIMITED270
AS46829Lamhosting LLC248
AS131668Taiwan Digital Streaming Co.245
AS203405Lin Kai-Lun240
AS207469Sung Yu Li240
AS150755-234
AS208223SHU-HAO TUNG117
AS15412-64
AS131642-25
AS10310Yahoo Holdings Inc.24
AS18423-24
AS9681-18
AS58807-17
AS16509Amazon.com, Inc.16
AS703Verizon Business14
AS9505Taiwan Internet Gateway13
AS10099China Unicom Global10
AS18044-10
AS38254-10
AS17408AboveNet Communications Taiwan9
AS8075Microsoft Corporation6
AS9678HostingInside LTD5
AS14537Continent 8 LLC4
AS16552-4
AS201217-4

The 30 most visible of 72.

97 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.