Advanced Guides
International City Latency
Last Updated: 8 September 2025We monitor latency to various cities around the world. This guide has details about the monitoring we provide and how you can use looking glasses to troubleshoot incoming international traffic, often useful for gamers or people who work remotely. We monitor latency daily and strive to be the Cape Town ISP with the lowest latency...
IPv6
Last Updated: 6 September 2025🚀 Enable IPv6 on your Atomic fibre internet The IPv6 protocol is the default and quickest way to start up a new internet connection in most modern operating systems. Despite not technically needing to use IPv6, if you want to enjoy the benefits and future-proof your network you are welcome to do so. 🤓 Why...
iPerf Tests
Last Updated: 19 August 2025🚀 Test your Atomic Fibre Line Health with iPerf We host an iPerf server on our network for Atomic customers. If you have a laptop plugged into your Fibre ONT/CPE the only thing between your device and the iPerf server is your Fibre Network Operator. If the iPerf tests show packet loss, we can ask...
Static IPs
Last Updated: 23 July 2025🎯 Get a static IP address for your Fibre Internet We offer a static IP address service, or multiple static IP addresses, on our Home and Business Fibre Internet services on Octotel, Frogfoot, Vumatel and Openserve. Your router will always be assigned the same IP address. Static IP addresses are assigned from a different IP...
Packet loss, MTR and Pingplotter
Last Updated: 23 July 2025🔊 Troubleshooting with MTR, Pingplotter and Ping This guide is useful for identifying where extra latency or packet loss occurs. Gamers should take a look at our Advice for Gamers guide – it’s a collection of tips and advice for troubleshooting international game latency issues. Often the solution is to set up more direct peering with game...
Overview of Fibre Troubleshooting
Last Updated: 4 September 2025A collection of things you can do to check your fibre line health. It’s best to do these in the order below. 1. Reboot and stable power Reboot your fibre box, router and WiFi access point(s) and make sure they have stable power. 2. Confirm the status lights on your fibre box are normal Make...
Cabled Speed Tests
Last Updated: 31 July 2025🧩 Why are cabled speed tests needed? We need cabled speed tests to rule out Wifi related problems and the fibre networks require these tests to open support tickets. Please view our Ethernet Testing Policy for more details. You will need an Ethernet cable and a laptop with a Gigabit Ethernet port. Ethernet adaptors are...
DNS and NTP Server Options
Last Updated: 22 July 2025🌍 Which DNS servers should I use? Most customers use the default DNS settings. Our on-net anycast caching DNS servers and Quad9 hosted at CINX: 4️⃣ IPv4 102.135.240.1 9.9.9.9 6️⃣ IPv6 2c0f:ef18::1 2620:fe::9 You can also configure custom DNS servers. Popular options are: 1.1.1.1 Cloudflare / CPT 8.8.8.8 Google / JHB We suggest Quad9 over...
How to fix a Bridged Line
Last Updated: 12 August 2025⚡️ Just give me the short version Problem: A bridged line can happen if your router settings or cabling changed. Solution: Check that your fibre box (ONT) is directly connected to the WAN port of your router. The WAN port will usually be marked with a different colour to the LAN ports. WAN ports are often yellow,...
Configure a PPPoE Login on a Laptop
Last Updated: 22 July 2025This guide is mostly for Openserve customers who would like to do a cabled speed test directly in the fibre box / ONT using a laptop or PC. This test will rule out problems with the router, which usually handles the PPPoE session. Once you have configured your Atomic PPPoE login on your laptop (see...
Buffer Bloat and Latency under Load
Last Updated: 6 September 2025🐢 What is Buffer Bloat? TL;DR: your router has a big buffer queueing ‘bulk’ traffic, which is causing delays in sending ‘interactive’ traffic. Buffer Bloat is when network devices, like routers, store too much data in their buffers, causing high latency and jitter. It happens when large buffers hold packets longer than necessary, especially during...
Backup Connectivity – GSM Failover
Last Updated: 22 August 2025Fibre to the home (FTTH) lines usually come with a ‘best effort’ SLA from the fibre network, and it can sometimes take 3 business days to restore a fibre line. If you work from home or have critical services like alarm systems, we recommend adding a backup internet connection. 🥈 Backup connectivity options ⚙️ Hardware...
Local Software Mirrors
Last Updated: 21 July 2025🐧 A collection of Mirrors we suggest for Atomic customers: 👀 More
SMTP Servers
Last Updated: 23 July 2025✉️ SMTP Email Services and Relays TL;DR – As a fibre-only ISP, we do not provide email or SMTP relay services. Your email provider should be providing you with SMTP services. If you are using your current/old ISP’s SMTP service to send emails, you could have an email sending problem if you switch to Atomic....
RTMP Streaming Relay
Last Updated: 31 July 2025Keep your stream rock-solid with the Atomic RTMP Ingest Relay – a free service for Atomic customers. We currently only support Twitch, but we can add more relays on request. An RTMP relay can handle Twitch, Youtube, Kick, D-Live, Vimeo, etc. 💡 Why use the relay? Streaming directly to Twitch can result in dropped connections...
