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Autonomous System

AS37739 ยท Abantu Cloud Africa (Pty) Ltd

Overview

AS37739 is announced on the Internet: RIPE RIS route collectors currently see 9 IPv4 prefixes and 6 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 2,304 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 39 upstream neighbours (transit providers or peers) and 13 downstream neighbours (customers or networks it carries). Its most visible upstreams are PCCW Global (HK) Ltd. (AS3491), Hurricane Electric LLC (AS6939), and Zayo Bandwidth (AS6461). AS37739 was assigned by AFRINIC, and its registration country is South Africa.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 10:58 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 23.147.136.1, the first address of 23.147.136.0/24. 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 (9 prefixes)

PrefixAddresses
23.147.136.0/24256
102.204.248.0/24256
102.204.249.0/24256
102.204.250.0/24256
102.204.251.0/24256
102.209.240.0/24256
102.209.241.0/24256
102.222.156.0/24256
102.222.157.0/24256

IPv6 prefixes (6 prefixes)

Prefix
2c0f:2c40:30::/48
2c0f:2c40:2030::/48
2c0f:2c40:a310::/48
2c0f:2c40:cc21::/48
2c0f:2c40:db00::/48
2c0f:2c40:ea00::/40

Neighbours

Upstreams (transit or peers) (39)

ASNetworkVisibility
AS3491PCCW Global (HK) Ltd.2,141
AS6939Hurricane Electric LLC642
AS6461Zayo Bandwidth38
AS37468Angola Cables25
AS3303Swisscom (Schweiz) AG11
AS5405Inter.link GmbH11
AS22356Durand do Brasil Ltda6
AS25091IP-Max SA4
AS34019Hivane Association4
AS50629LWLcom GmbH4
AS8298IPng Networks GmbH3
AS29075IELO-LIAZO SERVICES SAS3
AS1103-2
AS3214xTom GmbH2
AS3741Dimension Data2
AS14840BR.Digital Telecom2
AS24482SG.GS2
AS24961WIIT AG2
AS28917Fiord Networks, UAB2
AS31713Gateway Communications2
AS34927iFog GmbH2
AS3935131173 Services AB2
AS39686-2
AS61049Exascale Ltd2
AS62000SERVERD SAS2
AS1031PEER 1031 LLC1
AS6204INTERKVM HOST SRL1
AS9044-1
AS9498BHARTI Airtel Ltd.1
AS20326TeraSwitch Networks Inc.1

The 30 most visible of 39.

Downstreams (customers) (13)

ASNetworkVisibility
AS329249Dolphin Coast Wireless Pty Ltd380
AS328711Intaweb (Pty) Ltd.371
AS329369JNCS PTY LTD265
AS329386Neurotel Communications264
AS328178The Computer Hut cc261
AS26701NCRYPTD LLC241
AS11938NCRYPTD LLC240
AS329391Cosmiq Broadband233
AS211869Nicholis du Toit125
AS35487Misaka Network, Inc.46
AS200132-11
AS329371-6
AS202585-3

35 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.