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Autonomous System

AS137263 ยท NETEASE HONG KONG LIMITED

Overview

AS137263 is announced on the Internet: RIPE RIS route collectors currently see 43 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 11,776 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 16 upstream neighbours (transit providers or peers) and no downstream neighbour (customers or networks it carries). Its most visible upstreams are NTT America, Inc. (AS2914), Enjoyvc Cloud Group Limited. (AS136897), and Zenlayer Inc (AS21859). AS137263 was assigned by APNIC, and its registration country is Hong Kong SAR China.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:08 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 45.195.16.1, the first address of 45.195.16.0/21. 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 (43 prefixes)

PrefixAddresses
45.195.16.0/212,048
45.195.16.0/24256
45.195.19.0/24256
45.195.20.0/24256
45.195.23.0/24256
45.195.24.0/24256
45.195.138.0/24256
103.126.92.0/221,024
103.126.92.0/23512
103.126.94.0/24256
103.126.95.0/24256
103.129.252.0/221,024
103.129.252.0/23512
103.129.252.0/24256
103.129.254.0/23512
103.131.191.0/24256
103.135.240.0/221,024
103.135.240.0/23512
103.135.241.0/24256
103.135.242.0/23512
103.209.128.0/24256
113.21.92.0/24256
150.116.81.0/24256
154.18.236.0/24256
154.18.237.0/24256
154.81.10.0/24256
154.86.4.0/24256
154.86.5.0/24256
154.203.247.0/24256
156.224.81.0/24256
156.224.82.0/24256
156.224.83.0/24256
156.225.180.0/24256
156.236.16.0/24256
156.245.2.0/24256
156.250.2.0/24256
156.253.4.0/24256
160.236.52.0/24256
160.236.53.0/24256
185.122.207.0/24256
193.233.194.0/24256
205.210.164.0/24256
210.79.60.0/24256

IPv6 prefixes (1 prefix)

Prefix
2403:9d40::/32

Neighbours

Upstreams (transit or peers) (16)

ASNetworkVisibility
AS2914NTT America, Inc.621
AS136897Enjoyvc Cloud Group Limited.339
AS21859Zenlayer Inc214
AS6939Hurricane Electric LLC114
AS8359MTS PJSC8
AS4635Hong Kong Internet Exchange--Route Server 16
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC6
AS33891Core-Backbone GmbH6
AS9002RETN Limited2
AS9498BHARTI Airtel Ltd.2
AS38008Aperture Science Limited2
AS4657StarHub Ltd1
AS15802Emirates Integrated Telecommunications Company PJSC1
AS17557Pakistan Telecommunication Company Limited1
AS20326TeraSwitch Networks Inc.1
AS132132-1

Downstreams (customers) (0)

None seen.

15 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.