Skip to content

Autonomous System

AS9129 · MTN SA

Overview

AS9129 is announced on the Internet: RIPE RIS route collectors currently see 61 IPv4 prefixes and 2 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 27,136 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 1 upstream neighbour (transit providers or peers) and 32 downstream neighbours (customers or networks it carries). Its most visible upstream is MTN SA (AS16637). AS9129 was assigned by RIPE NCC, and its registration country is South Africa.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:43 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 41.209.16.1, the first address of 41.209.16.0/20. 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 (61 prefixes)

PrefixAddresses
41.209.3.0/24256
41.209.5.0/24256
41.209.8.0/212,048
41.209.8.0/24256
41.209.9.0/24256
41.209.10.0/24256
41.209.12.0/24256
41.209.14.0/24256
41.209.15.0/24256
41.209.16.0/204,096
41.209.16.0/212,048
41.209.17.0/24256
41.209.18.0/24256
41.209.21.0/24256
41.209.22.0/24256
41.209.23.0/24256
41.209.24.0/212,048
41.209.24.0/24256
41.209.28.0/24256
41.209.32.0/204,096
41.209.32.0/212,048
41.209.39.0/24256
41.209.40.0/212,048
41.209.43.0/24256
41.209.48.0/204,096
41.209.48.0/212,048
41.209.49.0/24256
41.209.50.0/24256
41.209.51.0/24256
41.209.53.0/24256
41.209.56.0/212,048
41.209.57.0/24256
41.209.60.0/24256
195.202.64.0/212,048
195.202.64.0/24256
195.202.65.0/24256
195.202.66.0/24256
195.202.67.0/24256
195.202.72.0/212,048
195.202.73.0/24256
195.202.75.0/24256
195.202.80.0/212,048
195.202.80.0/221,024
195.202.81.0/24256
195.202.87.0/24256
195.202.88.0/212,048
195.202.88.0/221,024
195.202.88.0/24256
195.202.89.0/24256
195.202.90.0/24256
195.202.92.0/221,024
195.202.93.0/24256
217.199.144.0/212,048
217.199.144.0/24256
217.199.145.0/24256
217.199.146.0/24256
217.199.148.0/24256
217.199.149.0/24256
217.199.151.0/24256
217.199.152.0/212,048
217.199.153.0/24256

IPv6 prefixes (2 prefixes)

Prefix
2001:4368::/32
2001:4368:2000::/48

Neighbours

Upstreams (transit or peers) (1)

ASNetworkVisibility
AS16637MTN SA10,584

Downstreams (customers) (32)

ASNetworkVisibility
AS328490Unwired Communications Limited1,433
AS3277864G Telecom885
AS329621Gawia Ltd866
AS329044Surf Net Solutions Limited577
AS37129Rasmilink415
AS329600Elegant Telekom Limited395
AS328987Lime Emerging Solutions Limited391
AS329211Novia East Africa Ltd381
AS328782Karti Telecom Limited298
AS327748Co-operative Bank of Kenya296
AS328162-294
AS329272-293
AS329622-293
AS203905-292
AS328753-291
AS329183-289
AS329528-289
AS329654-289
AS329518-287
AS329660-286
AS329717-286
AS329773-283
AS329367-275
AS329497-141
AS37406-110
AS329192-96
AS327994-80
AS329288-48
AS37684Angani Limited1
AS329033-1

The 30 most visible of 32.

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.