Autonomous System
AS23764 · CTGNet
Overview
AS23764 is announced on the Internet: RIPE RIS route collectors currently see 181 IPv4 prefixes and 29 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 50,432 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 145 upstream neighbours (transit providers or peers) and 360 downstream neighbours (customers or networks it carries). Its most visible upstreams are Level 3 Parent, LLC (AS3356), TELECOM ITALIA SPARKLE S.p.A. (AS6762), and Hurricane Electric LLC (AS6939). AS23764 was assigned by APNIC, and its registration country is Hong Kong SAR China.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:58 PM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 202.55.8.1, the first address of 202.55.8.0/21. 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 (181 prefixes)
| Prefix | Addresses |
|---|---|
| 5.10.136.0/24 | 256 |
| 5.154.130.0/24 | 256 |
| 5.154.144.0/24 | 256 |
| 5.154.145.0/24 | 256 |
| 5.154.146.0/24 | 256 |
| 5.154.147.0/24 | 256 |
| 5.154.154.0/24 | 256 |
| 5.154.155.0/24 | 256 |
| 5.154.156.0/24 | 256 |
| 5.154.157.0/24 | 256 |
| 5.154.158.0/24 | 256 |
| 5.154.159.0/24 | 256 |
| 45.195.4.0/24 | 256 |
| 45.195.5.0/24 | 256 |
| 45.195.7.0/24 | 256 |
| 45.196.24.0/24 | 256 |
| 45.196.25.0/24 | 256 |
| 45.196.27.0/24 | 256 |
| 61.186.2.0/24 | 256 |
| 63.140.4.0/24 | 256 |
| 63.140.8.0/24 | 256 |
| 63.140.14.0/24 | 256 |
| 69.194.163.0/24 | 256 |
| 69.194.171.0/24 | 256 |
| 69.194.172.0/24 | 256 |
| 69.194.173.0/24 | 256 |
| 69.194.175.0/24 | 256 |
| 79.139.4.0/24 | 256 |
| 79.139.5.0/24 | 256 |
| 79.139.6.0/24 | 256 |
| 79.139.8.0/24 | 256 |
| 79.139.10.0/24 | 256 |
| 79.139.11.0/24 | 256 |
| 79.139.13.0/24 | 256 |
| 79.139.14.0/24 | 256 |
| 95.130.192.0/24 | 256 |
| 95.130.194.0/24 | 256 |
| 95.130.199.0/24 | 256 |
| 102.217.164.0/24 | 256 |
| 102.217.166.0/24 | 256 |
| 102.217.167.0/24 | 256 |
| 121.59.38.0/24 | 256 |
| 121.59.100.0/24 | 256 |
| 121.59.106.0/24 | 256 |
| 121.59.120.0/24 | 256 |
| 121.59.122.0/24 | 256 |
| 121.59.124.0/24 | 256 |
| 121.59.140.0/24 | 256 |
| 125.93.24.0/24 | 256 |
| 125.93.25.0/24 | 256 |
| 125.93.26.0/24 | 256 |
| 125.93.27.0/24 | 256 |
| 131.221.80.0/24 | 256 |
| 131.221.81.0/24 | 256 |
| 131.221.82.0/24 | 256 |
| 131.221.83.0/24 | 256 |
| 139.189.127.0/24 | 256 |
| 145.14.64.0/24 | 256 |
| 145.14.69.0/24 | 256 |
| 145.14.79.0/24 | 256 |
| 145.14.92.0/24 | 256 |
| 147.78.133.0/24 | 256 |
| 147.78.135.0/24 | 256 |
| 154.72.40.0/24 | 256 |
| 154.72.41.0/24 | 256 |
| 154.72.42.0/24 | 256 |
| 154.72.43.0/24 | 256 |
| 154.72.45.0/24 | 256 |
| 154.72.46.0/24 | 256 |
| 154.209.21.0/24 | 256 |
| 154.209.23.0/24 | 256 |
| 156.238.20.0/24 | 256 |
| 156.242.4.0/24 | 256 |
| 156.242.8.0/24 | 256 |
| 183.91.51.0/24 | 256 |
| 183.91.63.0/24 | 256 |
| 185.75.172.0/24 | 256 |
| 202.55.2.0/24 | 256 |
| 202.55.3.0/24 | 256 |
| 202.55.5.0/24 | 256 |
| 202.55.6.0/24 | 256 |
| 202.55.7.0/24 | 256 |
| 202.55.8.0/21 | 2,048 |
| 202.55.14.0/24 | 256 |
| 202.55.15.0/24 | 256 |
| 202.55.16.0/24 | 256 |
| 202.55.17.0/24 | 256 |
| 202.55.30.0/24 | 256 |
| 203.8.30.0/24 | 256 |
| 203.12.200.0/24 | 256 |
| 203.12.201.0/24 | 256 |
| 203.12.202.0/24 | 256 |
| 203.12.203.0/24 | 256 |
| 203.12.204.0/24 | 256 |
| 203.12.205.0/24 | 256 |
| 203.14.188.0/24 | 256 |
| 203.14.189.0/24 | 256 |
| 203.14.190.0/24 | 256 |
| 203.14.191.0/24 | 256 |
| 203.15.113.0/24 | 256 |
Showing the first 100 of 181, in address order. Complete list on RIPEstat
IPv6 prefixes (29 prefixes)
| Prefix |
|---|
| 2400:9380:9002::/48 |
| 2400:9380:9115::/48 |
| 2400:9380:9116::/48 |
| 2400:9380:9206::/48 |
| 2400:9380:a003::/48 |
| 2400:9380:a00a::/48 |
| 2400:9380:a00c::/48 |
| 2400:9380:a014::/48 |
| 2400:9380:a016::/48 |
| 2400:9380:a01f::/48 |
| 2400:9380:a022::/48 |
| 2400:9380:a028::/48 |
| 2400:9380:a042::/48 |
| 2400:9380:a110::/48 |
| 240e:97d:8000::/48 |
| 2804:1e48:9001::/48 |
| 2804:1e48:9003::/48 |
| 2a04:f580:9001::/48 |
| 2a04:f580:9090::/48 |
| 2a04:f581:110b::/48 |
| 2a04:f581:a123::/48 |
| 2a04:f581:a125::/48 |
| 2c0f:f7a8:1::/48 |
| 2c0f:f7a8:2::/48 |
| 2c0f:f7a8:24::/48 |
| 2c0f:f7a8:29::/48 |
| 2c0f:f7a8:37::/48 |
| 2c0f:f7a8:47::/48 |
| 2c0f:f7a8:9011::/48 |
Neighbours
Upstreams (transit or peers) (145)
| AS | Network | Visibility |
|---|---|---|
| AS3356 | Level 3 Parent, LLC | 10,508 |
| AS6762 | TELECOM ITALIA SPARKLE S.p.A. | 8,179 |
| AS6939 | Hurricane Electric LLC | 7,373 |
| AS3257 | GTT Communications Inc. | 6,274 |
| AS31133 | PJSC MegaFon | 6,174 |
| AS1299 | Arelion Sweden AB | 4,647 |
| AS2914 | NTT America, Inc. | 4,481 |
| AS174 | Cogent Communications, LLC | 3,510 |
| AS48200 | Opteamax GmbH | 2,482 |
| AS38008 | Aperture Science Limited | 2,214 |
| AS7713 | PT Telekomunikasi Indonesia | 2,174 |
| AS34549 | meerfarbig GmbH & Co. KG | 2,125 |
| AS50629 | LWLcom GmbH | 1,651 |
| AS3491 | PCCW Global (HK) Ltd. | 1,608 |
| AS34927 | iFog GmbH | 1,505 |
| AS13030 | Init7 (Switzerland) Ltd. | 1,491 |
| AS50673 | Serverius Holding B.V. | 1,392 |
| AS34177 | Celeste SAS | 1,382 |
| AS24961 | WIIT AG | 1,299 |
| AS6453 | TATA COMMUNICATIONS (AMERICA) INC | 1,267 |
| AS49434 | FBW NETWORKS SAS | 1,232 |
| AS12956 | TELEFONICA GLOBAL SOLUTIONS SL | 1,210 |
| AS25091 | IP-Max SA | 1,120 |
| AS8218 | Zayo Infrastructure France SA | 1,031 |
| AS34019 | Hivane Association | 947 |
| AS8758 | Iway AG | 900 |
| AS6461 | Zayo Bandwidth | 890 |
| AS20485 | Joint Stock Company TransTeleCom | 864 |
| AS48362 | Stadtwerke Feldkirch | 789 |
| AS29691 | Nine Internet Solutions AG | 746 |
The 30 most visible of 145.
Downstreams (customers) (360)
| AS | Network | Visibility |
|---|---|---|
| AS38158 | PT. Cyberindo Aditama | 31,035 |
| AS45899 | VNPT Corp | 29,155 |
| AS4800 | PT Aplikanusa Lintasarta | 27,462 |
| AS31133 | PJSC MegaFon | 13,394 |
| AS4809 | China Telecom Next Generation Carrier Network | 6,864 |
| AS4134 | No.31,Jin-rong Street | 6,259 |
| AS20485 | Joint Stock Company TransTeleCom | 5,585 |
| AS6939 | Hurricane Electric LLC | 5,534 |
| AS9534 | Binariang Berhad | 5,224 |
| AS30990 | DJIBOUTI TELECOM S.A. | 5,198 |
| AS38082 | True International Gateway Co., Ltd. | 4,330 |
| AS23856 | - | 4,189 |
| AS45796 | UIH / BB Connect | 4,057 |
| AS139009 | Windstream Communication Limited | 3,591 |
| AS136897 | Enjoyvc Cloud Group Limited. | 3,510 |
| AS132876 | Symphony Communication (Thailand) PCL. | 2,656 |
| AS9848 | SEJONG NETWORKS | 2,485 |
| AS8849 | Melbikomas UAB | 1,804 |
| AS45629 | JasTel Network International Gateway | 1,645 |
| AS38901 | - | 1,487 |
| AS38040 | TOT Public Company Limited | 1,221 |
| AS7713 | PT Telekomunikasi Indonesia | 1,076 |
| AS139057 | Edgenext Legend Dynasty Pte. Ltd. | 989 |
| AS33771 | - | 925 |
| AS18001 | Dialog Axiata PLC. | 832 |
| AS23673 | - | 819 |
| AS55992 | - | 811 |
| AS18046 | DongFong Technology Co. Ltd. | 722 |
| AS23947 | PT.Mora Telematika Indonesia | 716 |
| AS9541 | Cyber Internet Services (Pvt) Ltd. | 664 |
The 30 most visible of 360.
218 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.