Best Fibre ISP
South Africa 2026

Every "best ISP" ranking has to answer an uncomfortable question first: best measured how? MyBroadband's quarterly survey measures self-reported satisfaction from roughly a million speed tests. Ookla's Speed Score measures raw, real-world throughput. Trustpilot measures how happy people are once a support ticket has already gone in. None of the three agree with each other, and that disagreement is itself the finding.

On MyBroadband's Q1 2026 Insights survey (~1 million speed tests), Afrihost leads on satisfaction at 72.7%, with Supersonic trailing the field at 53.4%. On Ookla's Speed Score - the last award Ookla has published for SA fixed ISPs, Q1-Q2 2024 - Cool Ideas leads outright at 81.31, a wider margin over its nearest competitor than any gap in the satisfaction survey. And on Trustpilot, Webafrica carries both the highest rating (4.4/5) and, decisively, the largest review base (~17 000 reviews) of any ISP we track - a difference in sample size that matters more than the star rating alone.

Read the gaps in that table as findings, not omissions. Ookla has only scored five SA fixed ISPs since its last published award, so most rows show "Not measured" rather than a guessed figure. Likewise, several MyBroadband-surveyed brands - MTN, Vodacom, Telkom, Rain, Cell C, Supersonic, Home Connect and Axxess - don't appear in our own deal catalogue with enough tracked packages to compute a reliable median, so those cells read "Not in our catalogue" rather than borrowing a number from somewhere else. We would rather show the gap than fabricate the figure.

Survey scores tell you about the average experience. They don't tell you what you'll be billed. Across the 5 ISPs with enough tracked packages to compute a reliable median (10+ live packages each, 654 packages in total), the median cost per Mbps runs from R6.96 on Vox to R9.75 on RSAweb - a 1.4× spread for what is, underneath the branding, wholesale capacity bought from the same handful of fibre networks.

None of this means the cheapest median ISP is automatically the right pick - it means price and reputation are two separate axes, and a genuinely useful comparison has to look at both rather than defaulting to whichever logo has the biggest marketing budget.

Every South African ISP in this comparison resells wholesale capacity from the same short list of open- access fibre networks. Ispa's February 2026 member perception survey (406 ratings from 45 ISPs, average 6.2/10) rates how those networks actually treat the ISPs reselling them - technical reliability, fault turnaround and fair dealing - which is a proxy for what you'll experience regardless of whose invoice you get.

Coverage is the other half of the picture: a network scoring well on reliability is no use if it doesn't reach your street. Homes passed varies by an order of magnitude between the biggest and smallest networks we track footprint data for.

This is why "which ISP is best" is the wrong first question for most people. The right first question is which networks reach your address - then compare ISPs within that shortlist, not across the whole market.

Headline prices are close to useless without knowing whether they step up after a promo period. Of the 5 ISPs with a large enough tracked catalogue to check, 5 run at least some promotional pricing that we can see in our data (a discounted rate for the first few months, reverting to a higher standard rate) - the rest price flat from day one, as far as our catalogue shows.

The practical lesson is the same one that applies on Webafrica specifically: compare the twelve-month cost, not the month-one price. An ISP with no promo at all and a middling headline rate can easily beat a steep-looking discount that reverts after two or three months - do the arithmetic before you sign up.

These are the two ISPs most people actually shortlist against each other, so it's worth putting every verifiable dimension side by side rather than relying on which one has the louder advertising this month.

Afrihost's real edge is breadth and MyBroadband's own award: it carries more networks in our catalogue and was named MyBroadband's ISP of the Year 2026 for service breadth. Webafrica's real edge is a much larger, independently-checkable review base and a lower median cost per Mbps across the packages we track. Neither fact cancels the other out - which one matters more depends on whether your address has multiple network options or just one.

A single "best ISP" answer is a marketing claim, not a finding - the numbers above show three different leaders depending on which axis you weight. Here's how to actually use them.

• Optimising purely for price? Start with Vox, which carries the lowest median cost per Mbps in our tracked catalogue (R6.96 across 133 packages) - then confirm it actually resells the network at your address before you get attached to the number.
• On a niche or less-common network? Afrihost carries the widest catalogue breadth we track (37 networks), so it's the one most likely to actually sell on whatever fibre operator happens to serve your street.
• Chasing raw measured speed? Cool Ideas posted the highest Ookla Speed Score of the five ISPs Ookla has measured (81.31, Q1-Q2 2024) - useful context if benchmarked performance matters more to you than price.
• Want the largest, most checkable satisfaction signal? Webafrica's Trustpilot base (~17 000 reviews) is large enough that its 4.4/5 rating is a genuine signal rather than a handful of extreme reviews skewing the average.

Whichever ISP you land on, the single highest-leverage step is still checking which networks actually reach your address before comparing anything else - an ISP's rating means nothing if it doesn't sell on the fibre passing your house.