Autonomous System
AS2018 · Tertiary Education and Research Network of South Africa
Overview
AS2018 is announced on the Internet: RIPE RIS route collectors currently see 375 IPv4 prefixes and 14 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 1,303,552 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 67 upstream neighbours (transit providers or peers) and 7 downstream neighbours (customers or networks it carries). Its most visible upstreams are Cogent Communications, LLC (AS174), Florida International University (AS20080), and Hurricane Electric LLC (AS6939). AS2018 was assigned by ARIN, and its registration country is South Africa.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:25 AM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 196.254.0.1, the first address of 196.254.0.0/15. 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 (375 prefixes)
| Prefix | Addresses |
|---|---|
| 137.214.0.0/16 | 65,536 |
| 137.214.0.0/17 | 32,768 |
| 137.214.128.0/17 | 32,768 |
| 137.215.0.0/16 | 65,536 |
| 137.215.0.0/17 | 32,768 |
| 137.215.128.0/17 | 32,768 |
| 143.128.0.0/16 | 65,536 |
| 143.128.0.0/17 | 32,768 |
| 143.128.128.0/17 | 32,768 |
| 146.64.0.0/16 | 65,536 |
| 146.64.0.0/17 | 32,768 |
| 146.64.5.0/24 | 256 |
| 146.64.8.0/24 | 256 |
| 146.64.19.0/24 | 256 |
| 146.64.24.0/24 | 256 |
| 146.64.25.0/24 | 256 |
| 146.64.28.0/24 | 256 |
| 146.64.58.0/24 | 256 |
| 146.64.80.0/24 | 256 |
| 146.64.84.0/24 | 256 |
| 146.64.85.0/24 | 256 |
| 146.64.86.0/24 | 256 |
| 146.64.128.0/17 | 32,768 |
| 146.64.216.0/21 | 2,048 |
| 146.141.0.0/16 | 65,536 |
| 146.230.0.0/16 | 65,536 |
| 146.230.0.0/17 | 32,768 |
| 146.230.128.0/17 | 32,768 |
| 146.232.0.0/17 | 32,768 |
| 146.232.128.0/17 | 32,768 |
| 152.106.0.0/16 | 65,536 |
| 152.106.0.0/17 | 32,768 |
| 152.106.2.0/24 | 256 |
| 152.106.5.0/24 | 256 |
| 152.106.6.0/24 | 256 |
| 152.106.8.0/24 | 256 |
| 152.106.18.0/24 | 256 |
| 152.106.19.0/24 | 256 |
| 152.106.99.0/24 | 256 |
| 152.106.102.0/24 | 256 |
| 152.106.120.0/24 | 256 |
| 152.106.128.0/17 | 32,768 |
| 152.112.0.0/16 | 65,536 |
| 152.112.0.0/17 | 32,768 |
| 152.112.128.0/17 | 32,768 |
| 154.114.0.0/17 | 32,768 |
| 154.114.8.0/24 | 256 |
| 154.114.9.0/24 | 256 |
| 154.114.10.0/23 | 512 |
| 154.114.13.0/24 | 256 |
| 154.114.14.0/24 | 256 |
| 154.114.17.0/24 | 256 |
| 154.114.22.0/24 | 256 |
| 154.114.23.0/24 | 256 |
| 154.114.27.0/24 | 256 |
| 154.114.28.0/24 | 256 |
| 154.114.29.0/24 | 256 |
| 154.114.32.0/24 | 256 |
| 154.114.33.0/24 | 256 |
| 154.114.36.0/24 | 256 |
| 154.114.37.0/24 | 256 |
| 154.114.39.0/24 | 256 |
| 154.114.40.0/24 | 256 |
| 154.114.41.0/24 | 256 |
| 154.114.44.0/24 | 256 |
| 154.114.47.0/24 | 256 |
| 154.114.50.0/23 | 512 |
| 154.114.52.0/24 | 256 |
| 154.114.54.0/24 | 256 |
| 154.114.56.0/24 | 256 |
| 154.114.57.0/24 | 256 |
| 154.114.69.0/24 | 256 |
| 154.114.70.0/24 | 256 |
| 154.114.71.0/24 | 256 |
| 154.114.72.0/23 | 512 |
| 154.115.0.0/17 | 32,768 |
| 154.115.16.0/21 | 2,048 |
| 154.115.24.0/21 | 2,048 |
| 155.232.0.0/16 | 65,536 |
| 155.232.0.0/17 | 32,768 |
| 155.232.10.0/24 | 256 |
| 155.232.20.0/24 | 256 |
| 155.232.25.0/24 | 256 |
| 155.232.26.0/24 | 256 |
| 155.232.35.0/24 | 256 |
| 155.232.38.0/24 | 256 |
| 155.232.61.0/24 | 256 |
| 155.232.135.0/24 | 256 |
| 155.232.186.0/24 | 256 |
| 155.232.195.0/24 | 256 |
| 155.232.240.0/24 | 256 |
| 155.232.248.0/24 | 256 |
| 155.232.250.0/24 | 256 |
| 155.232.251.0/24 | 256 |
| 155.232.252.0/24 | 256 |
| 155.238.0.0/16 | 65,536 |
| 155.238.0.0/17 | 32,768 |
| 155.238.128.0/17 | 32,768 |
| 155.240.160.0/19 | 8,192 |
| 155.240.192.0/19 | 8,192 |
Showing the first 100 of 375, in address order. Complete list on RIPEstat
IPv6 prefixes (14 prefixes)
| Prefix |
|---|
| 2001:4200::/32 |
| 2001:4200:48::/48 |
| 2001:4200:4b::/48 |
| 2001:4200:389::/48 |
| 2001:4200:494::/48 |
| 2001:4200:597::/48 |
| 2001:4200:3020::/48 |
| 2001:4200:3200::/44 |
| 2001:4200:3200::/48 |
| 2001:4200:3400::/48 |
| 2001:4200:7000::/48 |
| 2001:4200:7800::/48 |
| 2001:4200:8000::/44 |
| 2001:43f8:700::/44 |
Neighbours
Upstreams (transit or peers) (67)
| AS | Network | Visibility |
|---|---|---|
| AS174 | Cogent Communications, LLC | 1,060 |
| AS20080 | Florida International University | 575 |
| AS6939 | Hurricane Electric LLC | 284 |
| AS3303 | Swisscom (Schweiz) AG | 55 |
| AS33891 | Core-Backbone GmbH | 49 |
| AS5405 | Inter.link GmbH | 38 |
| AS36944 | Ubuntunet Alliance For Research and Education Networking | 37 |
| AS34549 | meerfarbig GmbH & Co. KG | 36 |
| AS25091 | IP-Max SA | 34 |
| AS9002 | RETN Limited | 31 |
| AS35280 | F5 Networks SARL | 30 |
| AS20965 | GEANT Vereniging | 20 |
| AS34927 | iFog GmbH | 20 |
| AS29075 | IELO-LIAZO SERVICES SAS | 19 |
| AS50304 | Blix Solutions AS | 19 |
| AS3216 | PJSC "Vimpelcom" | 18 |
| AS8298 | IPng Networks GmbH | 15 |
| AS39686 | Eurofiber Nederland BV | 15 |
| AS1103 | - | 14 |
| AS11537 | Internet2 | 14 |
| AS12779 | IT.Gate S.p.A. | 14 |
| AS41327 | Fiber Telecom S.p.A. | 14 |
| AS48362 | Stadtwerke Feldkirch | 14 |
| AS4455 | IX Reach Ltd | 13 |
| AS34177 | Celeste SAS | 13 |
| AS3214 | - | 12 |
| AS7195 | EDGEUNO S.A.S | 12 |
| AS14840 | BR.Digital Telecom | 12 |
| AS37468 | Angola Cables | 10 |
| AS6777 | - | 9 |
The 30 most visible of 67.
Downstreams (customers) (7)
| AS | Network | Visibility |
|---|---|---|
| AS37501 | University of the Free State | 638 |
| AS8094 | North West University | 599 |
| AS36982 | University of Cape Town | 445 |
| AS6149 | Tertiary Education and Research Network of South Africa | 273 |
| AS329522 | South African National Space Agency (SANSA) | 273 |
| AS37520 | Rhodes University | 67 |
| AS20144 | ICANN | 22 |
76 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.