Skip to content

Autonomous System

AS3758 · SingNet

Overview

AS3758 is announced on the Internet: RIPE RIS route collectors currently see 445 IPv4 prefixes and 21 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 735,744 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 6 upstream neighbours (transit providers or peers) and 93 downstream neighbours (customers or networks it carries). Its most visible upstreams are Singapore Telecommunications Ltd (AS7473), PCCW Global (HK) Ltd. (AS3491), and Arelion Sweden AB (AS1299). AS3758 was assigned by ARIN, and its registration country is Singapore.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:57 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 42.61.0.1

The trace goes to 42.61.0.1, the first address of 42.61.0.0/16. 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 (445 prefixes)

PrefixAddresses
2.56.56.0/221,024
31.210.22.0/23512
37.0.10.0/23512
42.60.138.0/23512
42.60.202.0/23512
42.60.228.0/23512
42.60.248.0/23512
42.61.0.0/1665,536
42.61.5.0/24256
42.61.10.0/24256
42.61.15.0/24256
42.61.22.0/24256
42.61.25.0/24256
42.61.31.0/24256
42.61.46.0/24256
42.61.51.0/24256
42.61.60.0/24256
42.61.65.0/24256
42.61.71.0/24256
42.61.93.0/24256
42.61.94.0/24256
42.61.104.0/24256
42.61.123.0/24256
42.61.129.0/24256
42.61.130.0/23512
42.61.132.0/221,024
42.61.136.0/212,048
42.61.160.0/212,048
42.61.168.0/23512
42.61.170.0/23512
42.61.172.0/23512
42.61.174.0/23512
42.61.176.0/23512
42.61.178.0/23512
42.61.180.0/23512
42.61.182.0/23512
42.61.184.0/221,024
42.61.188.0/221,024
42.61.192.0/204,096
42.61.208.0/221,024
42.61.212.0/221,024
42.61.216.0/212,048
42.61.224.0/23512
42.61.226.0/23512
42.61.228.0/23512
42.61.230.0/23512
42.61.232.0/23512
42.61.234.0/23512
42.61.236.0/23512
42.61.238.0/23512
42.61.240.0/221,024
42.61.244.0/23512
42.61.246.0/23512
42.61.248.0/221,024
42.61.252.0/221,024
45.86.188.0/23512
45.135.4.0/221,024
45.144.198.0/23512
58.185.0.0/1665,536
58.185.5.0/24256
58.185.15.0/24256
58.185.21.0/24256
58.185.63.0/24256
58.185.82.0/24256
58.185.83.0/24256
58.185.93.0/24256
58.185.163.0/24256
58.185.164.0/24256
58.185.178.0/24256
58.185.183.0/24256
58.185.190.0/24256
58.185.201.0/24256
58.185.207.0/24256
58.185.211.0/24256
58.185.212.0/24256
58.185.219.0/24256
58.185.220.0/24256
58.185.222.0/24256
58.185.223.0/24256
58.185.236.0/24256
58.185.237.0/24256
58.185.240.0/24256
58.185.248.0/24256
58.185.251.0/24256
80.94.89.0/24256
85.202.168.0/221,024
85.203.24.0/24256
85.203.35.0/24256
91.103.9.0/24256
91.217.236.0/24256
101.78.127.0/24256
103.186.249.0/24256
111.65.100.0/24256
111.65.102.0/23512
111.65.104.0/212,048
111.65.108.0/221,024
111.65.112.0/204,096
115.42.128.0/1732,768
115.42.181.0/24256
115.42.185.0/24256

Showing the first 100 of 445, in address order. Complete list on RIPEstat

IPv6 prefixes (21 prefixes)

Prefix
2001:c20::/32
2001:c20::/38
2001:c20:10::/48
2001:c20:18::/48
2001:c20:3c00::/38
2001:c20:4800::/38
2001:c20:48fe::/48
2001:c20:4c00::/38
2001:c20:5000::/38
2001:c20:6c00::/38
2001:c20:7009::/48
2001:c20:7807::/48
2001:c20:8405::/48
2001:c20:8407::/48
2001:c20:8408::/48
2001:c20:8409::/48
2001:c20:c814::/48
2001:c20:c818::/48
2400:1c00:13::/48
2401:be20::/32
2404:5800::/32

Neighbours

Upstreams (transit or peers) (6)

ASNetworkVisibility
AS7473Singapore Telecommunications Ltd18,935
AS3491PCCW Global (HK) Ltd.9,895
AS1299Arelion Sweden AB4,615
AS6453TATA COMMUNICATIONS (AMERICA) INC2,212
AS4657StarHub Ltd354
AS4637Telstra Global131

Downstreams (customers) (93)

ASNetworkVisibility
AS9255Singapore Telecom8,322
AS140929STARHUB-T20025B - T200251,953
AS9506Singtel Fibre Broadband1,662
AS45143SINGTEL MOBILE INTERNET SERVICE PROVIDER Singapore1,359
AS9890ATOS Information Technology (Singapore) Pte Ltd973
AS140928STARHUB-T20025A - T20025832
AS56094ITENET:wq785
AS140592GOVERNMENT TECHNOLOGY AGENCY754
AS7610NUS Gigapop747
AS13778Johnson & Johnson701
AS24467-552
AS38481JPMORGAN Singapore510
AS23728-497
AS13167-496
AS38055-494
AS152903-464
AS14630-415
AS6619-403
AS45133-393
AS398173-387
AS138947-379
AS56039-347
AS141760-347
AS10376-321
AS24030-318
AS14398-316
AS10794-298
AS9877Ngee Ann Polytechnic Computer Center293
AS135048-287
AS140610-285

The 30 most visible of 93.

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.