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Autonomous System

AS9924 · Taiwan Fixed Network, Telco and Network Service Provider.

Overview

AS9924 is announced on the Internet: RIPE RIS route collectors currently see 623 IPv4 prefixes and 10 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 1,892,096 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 27 upstream neighbours (transit providers or peers) and 50 downstream neighbours (customers or networks it carries). Its most visible upstreams are PCCW Global (HK) Ltd. (AS3491), RETN Limited (AS9002), and Taiwan Internet Gateway (AS9505). AS9924 was assigned by APNIC, and its registration country is Taiwan.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:56 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 49.216.0.1, the first address of 49.216.0.0/14. 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 (623 prefixes)

PrefixAddresses
2.18.16.0/23512
2.21.16.0/221,024
23.202.124.0/221,024
23.212.60.0/24256
43.240.24.0/221,024
49.214.0.0/15131,072
49.214.0.0/1665,536
49.215.0.0/1665,536
49.216.0.0/14262,144
49.216.0.0/1665,536
49.217.0.0/1665,536
49.218.0.0/1665,536
49.219.0.0/1665,536
60.198.0.0/1665,536
60.198.0.0/1732,768
60.198.31.0/24256
60.198.64.0/1816,384
60.198.128.0/1732,768
60.198.128.0/204,096
60.198.144.0/212,048
60.198.160.0/198,192
60.198.240.0/204,096
60.199.0.0/1665,536
60.199.0.0/1816,384
60.199.1.0/24256
60.199.2.0/24256
60.199.3.0/24256
60.199.4.0/24256
60.199.5.0/24256
60.199.6.0/24256
60.199.7.0/24256
60.199.8.0/24256
60.199.9.0/24256
60.199.10.0/24256
60.199.11.0/24256
60.199.12.0/24256
60.199.13.0/24256
60.199.14.0/24256
60.199.15.0/24256
60.199.16.0/24256
60.199.17.0/24256
60.199.18.0/24256
60.199.19.0/24256
60.199.20.0/24256
60.199.21.0/24256
60.199.22.0/24256
60.199.23.0/24256
60.199.24.0/24256
60.199.25.0/24256
60.199.26.0/24256
60.199.27.0/24256
60.199.29.0/24256
60.199.30.0/24256
60.199.31.0/24256
60.199.45.0/24256
60.199.46.0/24256
60.199.47.0/24256
60.199.48.0/212,048
60.199.49.0/24256
60.199.64.0/198,192
60.199.96.0/204,096
60.199.104.0/24256
60.199.105.0/24256
60.199.106.0/24256
60.199.107.0/24256
60.199.108.0/24256
60.199.109.0/24256
60.199.110.0/24256
60.199.111.0/24256
60.199.112.0/204,096
60.199.117.0/24256
60.199.118.0/24256
60.199.119.0/24256
60.199.120.0/23512
60.199.128.0/1732,768
60.199.128.0/1816,384
60.199.128.0/23512
60.199.128.0/24256
60.199.129.0/24256
60.199.130.0/24256
60.199.131.0/24256
60.199.132.0/24256
60.199.133.0/24256
60.199.134.0/24256
60.199.135.0/24256
60.199.136.0/24256
60.199.137.0/24256
60.199.138.0/24256
60.199.139.0/24256
60.199.140.0/23512
60.199.140.0/24256
60.199.141.0/24256
60.199.142.0/23512
60.199.142.0/24256
60.199.143.0/24256
60.199.144.0/24256
60.199.145.0/24256
60.199.147.0/24256
60.199.148.0/23512
60.199.149.0/24256

Showing the first 100 of 623, in address order. Complete list on RIPEstat

IPv6 prefixes (10 prefixes)

Prefix
2001:c50::/32
2001:4540::/27
2001:4541:9000::/36
2001:4546:1001::/48
2001:4546:1002::/48
2001:454c::/32
2001:454e::/32
2001:454e:aab0::/48
2001:454e:c010::/48
2403:82c0::/32

Neighbours

Upstreams (transit or peers) (27)

ASNetworkVisibility
AS3491PCCW Global (HK) Ltd.10,776
AS9002RETN Limited4,253
AS9505Taiwan Internet Gateway2,478
AS2914NTT America, Inc.2,006
AS6939Hurricane Electric LLC1,857
AS15412Flag Telecom UK Limited1,278
AS3356Level 3 Parent, LLC407
AS174Cogent Communications, LLC406
AS4637Telstra Global312
AS58453China Mobile International Limited308
AS9304HGC Global Communications Limited126
AS35280F5 Networks SARL44
AS7481-43
AS17676SoftBank Corp.28
AS4635Hong Kong Internet Exchange--Route Server 126
AS33891Core-Backbone GmbH19
AS9681-18
AS8220COLT Technology Services Group Limited17
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC12
AS8359MTS PJSC11
AS4134No.31,Jin-rong Street6
AS132132-5
AS4657StarHub Ltd4
AS15802-3
AS17557-3
AS3462-2
AS20326TeraSwitch Networks Inc.2

Downstreams (customers) (50)

ASNetworkVisibility
AS38841kbro CO. Ltd.2,495
AS24165UNION BROADBAND NETWORK1,854
AS24164UNION BROADBAND NETWORK1,628
AS24158Taiwan Mobile Co., Ltd.1,330
AS18429Extra-Lan Technologies Co., LTD1,237
AS24163UNION BROADBAND NETWORK1,100
AS7533Savecom International Inc.734
AS134094Serverfield Co., Ltd.687
AS7539National Center for High-performance Computing547
AS4781PAGIC.net , INC.519
AS24429Taobao - Zhejiang Taobao Network Co.,Ltd504
AS20940Akamai International B.V.499
AS131632-474
AS9671-473
AS131143-473
AS135596-453
AS131636-388
AS18049-384
AS131148-381
AS18045-345
AS131628-330
AS9216-297
AS131602-286
AS18413-278
AS4783-277
AS131611-274
AS31972-272
AS131595-268
AS18415-267
AS3911-266

The 30 most visible of 50.

18 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.