Skip to content

Autonomous System

AS4773 · MobileOne Ltd. Mobile/Internet Service Provider Singapore

Overview

AS4773 is announced on the Internet: RIPE RIS route collectors currently see 69 IPv4 prefixes and 23 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 401,664 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 22 upstream neighbours (transit providers or peers) and 2 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), TATA COMMUNICATIONS (AMERICA) INC (AS6453), and Arelion Sweden AB (AS1299). AS4773 was assigned by APNIC, and its registration country is Singapore.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:50 AM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 27.104.0.1

The trace goes to 27.104.0.1, the first address of 27.104.0.0/16. 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 (69 prefixes)

PrefixAddresses
27.104.0.0/1665,536
27.104.0.0/1732,768
43.245.104.0/221,024
49.245.0.0/1732,768
49.245.0.0/198,192
49.245.32.0/198,192
49.245.64.0/1816,384
49.245.128.0/1732,768
103.1.136.0/221,024
103.1.136.0/24256
103.1.137.0/24256
112.199.128.0/1732,768
112.199.128.0/1816,384
112.199.192.0/1816,384
116.197.192.0/198,192
116.197.192.0/212,048
116.197.200.0/212,048
116.197.224.0/198,192
116.197.224.0/212,048
116.197.232.0/212,048
118.189.176.0/204,096
118.189.192.0/204,096
118.189.208.0/212,048
119.56.0.0/221,024
119.56.4.0/24256
119.56.16.0/24256
119.56.17.0/24256
119.56.64.0/204,096
119.56.64.0/23512
119.56.66.0/23512
119.56.68.0/23512
119.56.70.0/23512
119.56.72.0/23512
119.56.74.0/23512
119.56.76.0/23512
119.56.78.0/23512
119.56.96.0/212,048
119.56.104.0/212,048
119.56.112.0/24256
119.56.126.0/24256
124.197.64.0/1816,384
124.246.64.0/1816,384
138.75.0.0/1732,768
138.75.0.0/1816,384
138.75.64.0/1816,384
138.75.128.0/1732,768
138.75.128.0/1816,384
138.75.192.0/1816,384
175.156.0.0/1665,536
175.156.0.0/1732,768
175.156.64.0/1816,384
175.156.128.0/1732,768
175.156.128.0/1816,384
175.156.128.0/198,192
175.156.192.0/1816,384
175.156.192.0/198,192
175.156.218.0/24256
175.156.224.0/204,096
180.129.0.0/1732,768
180.129.0.0/1816,384
180.129.64.0/198,192
180.129.96.0/198,192
202.65.240.0/212,048
202.65.240.0/24256
202.65.241.0/24256
202.65.242.0/24256
202.65.244.0/24256
202.65.246.0/24256
202.65.247.0/24256

IPv6 prefixes (23 prefixes)

Prefix
2401:7400::/32
2401:7400:800::/48
2401:7400:801::/48
2401:7400:5000::/47
2401:7400:5002::/47
2401:7400:5004::/47
2401:7400:5006::/47
2401:7400:5008::/47
2401:7400:500a::/47
2401:7400:500c::/47
2401:7400:7000::/47
2401:7400:7002::/47
2401:7400:7004::/47
2401:7400:7006::/47
2401:7400:7008::/47
2401:7400:700a::/47
2401:7400:700c::/47
2401:7400:9000::/44
2401:7400:9010::/44
2401:7400:c804::/47
2401:7400:c806::/47
2401:7400:c808::/47
2401:7400:c80a::/47

Neighbours

Upstreams (transit or peers) (22)

ASNetworkVisibility
AS6939Hurricane Electric LLC581
AS6453TATA COMMUNICATIONS (AMERICA) INC268
AS1299Arelion Sweden AB249
AS3491PCCW Global (HK) Ltd.191
AS4657StarHub Ltd183
AS2914NTT America, Inc.163
AS174Cogent Communications, LLC66
AS9002RETN Limited44
AS8220COLT Technology Services Group Limited9
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC6
AS33891Core-Backbone GmbH6
AS137409GSL Networks Pty LTD6
AS9583Sify Limited3
AS55518Singapore Internet Exchange Limited3
AS6057Administracion Nacional de Telecomunicaciones2
AS7195EDGEUNO S.A.S2
AS7575Australian Academic and Research Network (AARNet)1
AS9304HGC Global Communications Limited1
AS15802Emirates Integrated Telecommunications Company PJSC1
AS17557Pakistan Telecommunication Company Limited1
AS20326TeraSwitch Networks Inc.1
AS39120Convergenze S.p.A.1

Downstreams (customers) (2)

ASNetworkVisibility
AS132915M1 Limited/ Next Generation Broadband Network255
AS36040Google LLC4

20 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.