Skip to content

Autonomous System

AS140308 · CHINATELECOM Guangdong province Zhuhai 5G network

Overview

AS140308 is announced on the Internet: RIPE RIS route collectors currently see 117 IPv4 prefixes and 3 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 328,192 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 2 upstream neighbours (transit providers or peers) and no downstream neighbour (customers or networks it carries). Its most visible upstreams are No.31,Jin-rong Street (AS4134) and China Telecom Next Generation Carrier Network (AS4809). AS140308 was assigned by APNIC, and its registration country is China.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:55 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 116.26.0.1, the first address of 116.26.0.0/17. 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 (117 prefixes)

PrefixAddresses
14.21.24.0/221,024
14.21.112.0/24256
14.121.13.0/24256
14.147.216.0/24256
14.148.48.0/204,096
14.215.208.0/221,024
59.35.0.0/198,192
59.35.32.0/198,192
59.35.58.0/24256
59.35.59.0/24256
59.35.64.0/198,192
59.35.96.0/212,048
59.35.104.0/212,048
59.35.112.0/212,048
59.35.216.0/212,048
59.35.224.0/212,048
59.35.232.0/212,048
59.35.240.0/212,048
59.35.248.0/212,048
61.141.0.0/221,024
61.141.1.0/24256
61.141.4.0/24256
61.141.6.0/23512
61.141.8.0/212,048
61.141.16.0/204,096
61.141.33.0/24256
61.141.34.0/23512
61.141.63.0/24256
61.143.184.0/212,048
113.64.0.0/204,096
113.100.224.0/204,096
113.100.240.0/212,048
113.100.248.0/221,024
113.100.252.0/221,024
113.103.48.0/204,096
113.106.168.0/212,048
113.106.224.0/212,048
113.106.232.0/212,048
113.106.240.0/212,048
116.6.38.0/23512
116.19.36.0/23512
116.19.144.0/24256
116.26.0.0/1732,768
116.26.128.0/198,192
116.26.160.0/204,096
116.26.176.0/204,096
116.31.128.0/1816,384
116.31.176.0/204,096
119.121.63.0/24256
119.121.64.0/23512
119.121.66.0/24256
119.121.191.0/24256
119.121.192.0/23512
119.121.194.0/24256
121.10.190.0/23512
121.10.192.0/204,096
121.10.208.0/212,048
121.10.216.0/212,048
121.10.224.0/212,048
121.11.16.0/204,096
125.94.152.0/212,048
125.94.160.0/204,096
125.94.176.0/221,024
125.94.180.0/221,024
125.94.184.0/212,048
183.4.0.0/1816,384
183.7.0.0/1816,384
183.7.64.0/198,192
183.7.96.0/198,192
183.7.128.0/198,192
183.7.160.0/204,096
183.7.176.0/212,048
183.7.184.0/221,024
183.7.192.0/1816,384
183.10.80.0/204,096
183.10.96.0/212,048
183.10.104.0/221,024
183.44.208.0/204,096
183.44.224.0/204,096
183.44.240.0/204,096
183.47.32.0/212,048
183.50.0.0/212,048
183.50.8.0/212,048
183.50.16.0/212,048
183.50.24.0/212,048
183.50.32.0/198,192
183.57.0.0/221,024
183.57.4.0/221,024
183.57.8.0/221,024
183.57.181.0/24256
183.59.24.0/221,024
183.59.216.0/221,024
202.96.144.0/23512
202.103.171.0/24256
202.104.232.0/221,024
202.104.243.0/24256
202.104.244.0/221,024
202.105.224.0/221,024
202.105.248.0/23512
202.105.250.0/24256

Showing the first 100 of 117, in address order. Complete list on RIPEstat

IPv6 prefixes (3 prefixes)

Prefix
240e:108:404b::/48
240e:108:484b::/48
240e:6b8:1020::/44

Neighbours

Upstreams (transit or peers) (2)

ASNetworkVisibility
AS4134No.31,Jin-rong Street360
AS4809China Telecom Next Generation Carrier Network252

Downstreams (customers) (0)

None seen.

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.