How Vumatel's Open-Access Model Created 75+ ISPs and Shaped South African Fibre

Most of the visible competition in South African fibre - the price wars, the router promotions, the migration deals, the marketing campaigns - happens between internet service providers. Afrihost competes against Webafrica. Axxess competes against Atomic. Vox competes against Telkom Internet. Each ISP has its own brand, its own pricing, its own support model, its own customer experience.

But underneath all of that competition, the fibre cable in the street is owned and operated by a small number of network operators. On the largest share of South African addresses, that operator is Vumatel. The reason there are more than 75 different ISPs reselling Vumatel - rather than Vumatel selling directly to households like Telkom did with ADSL - comes down to a structural choice the company made early in its existence: the open-access model.

Open access is a wholesale model where the network operator (Vumatel) sells access to its physical fibre infrastructure to multiple internet service providers on equal, non-discriminatory terms. Any qualifying ISP can sign up to resell Vumatel fibre. The wholesale price list is the same for everyone. The technical access conditions are the same for everyone. The ISP can then layer its own service, support, billing, and pricing on top, and compete in the retail market.

This contrasts with two alternative models:

• Vertical integration, where the network operator also operates as the retail ISP and either doesn't allow other ISPs to use the network, or allows them on inferior terms. This was the historical approach in many international markets and was effectively how Telkom operated for decades.
• Closed access, where the network operator sells to a limited number of ISPs (often just one or two), giving those ISPs exclusivity in exchange for higher wholesale rates or volume commitments.

Vumatel chose open access from the beginning. The choice was strategic. By making its network available to any ISP on equal terms, Vumatel could focus on what it does well (building and operating fibre infrastructure) while leaving customer-facing complexity (billing, support, marketing, segmentation) to specialist retail operators.

By 2026, more than 75 ISPs sell fibre on the Vumatel network. They range from large national operators (Afrihost, Webafrica, Vox, MWEB, RSAWeb, Telkom Internet) through mid-sized players (Axxess, Atomic, Cool Ideas, Cybersmart) to specialist niche providers focused on specific customer segments or geographic areas. Each ISP has its own positioning, pricing, contract terms, support model, and bundled extras.

This level of ISP choice is unusual internationally. In many developed fibre markets, customers have a choice of three or four major ISPs. In South Africa, on a single Vumatel address, a customer can typically choose between fifteen or more ISPs at the same speed tier. This generates real downward pressure on retail pricing.

When you sign up for fibre with an ISP - say, Afrihost - what's actually happening behind the scenes is a wholesale transaction between Afrihost and Vumatel. Afrihost pays Vumatel a wholesale rate per line per month. Afrihost adds its own service margin, marketing costs, support costs, and any bundled extras (router, free installation), and sells you a retail package at a price that's higher than the wholesale rate.

The wholesale rate varies by speed tier. Higher-speed lines have higher wholesale rates. The rates are published or made available to all ISPs equally. Vumatel updates the rate card periodically - most recently on 1 April 2026, with the previous change a year earlier.

The ISP also pays Vumatel for the physical installation when a new line is provisioned, and various activation/migration fees when customers change ISPs or move addresses. These costs are sometimes passed through to customers and sometimes absorbed by the ISP as part of a sign-up promotion.

Because every ISP buys the same wholesale product at the same wholesale price, they can't easily differentiate on the underlying connectivity. The line that Afrihost sells you is technically identical to the line that Webafrica sells you. The same fibre, the same ONT, the same backhaul, the same speeds.

ISPs therefore differentiate on everything that surrounds the connectivity. The main vectors are:

• Price. The most visible competitive variable. Smaller margin players like Cool Ideas and Atomic often undercut larger ISPs on entry tiers. Larger ISPs use scale to absorb wholesale increases.
• Support quality. Atomic, Cool Ideas, and Axxess compete explicitly on support, offering shorter wait times and more technically competent staff.
• Bundled extras. Free router, free installation, free migration, bonus speed for the first three months.
• Contract terms. Some ISPs are month-to-month only. Others offer 12-month or 24-month contracts in exchange for lower monthly rates.
• Brand and reputation. Larger ISPs have more advertising budget and brand recognition. Smaller specialist ISPs have stronger reputation among technical users via communities like MyBroadband forums.
• Additional products. Some ISPs bundle voice, security, or other services - more relevant for small business than households.

The open-access model has produced a markedly more competitive retail fibre market than South Africa had under ADSL. With ADSL, Telkom controlled the network and effectively also dominated the retail market. Pricing was high, customer service was variable, and innovation was slow. The fibre market under open access has been the opposite: aggressive pricing, fast innovation, and high customer mobility.

The customer mobility is a particularly important effect. Because the underlying line stays the same when you migrate between ISPs (only the database entry changes), switching is genuinely easy. Most migrations complete within a week, with no new installation, and many ISPs cover the migration cost as part of a sign-up promotion. This means ISPs cannot rely on inertia to keep customers - they have to keep delivering value continuously, or customers leave.

The model isn't perfect. A few limitations are worth being honest about.

• Reduced ISP differentiation on actual product quality. Because the line is the same, customer experience differences come down to support and billing rather than core product. This can make ISP choice feel slightly arbitrary.
• Wholesale price changes affect everyone simultaneously. When Vumatel raises wholesale rates (as in April 2026), every ISP has to decide how to respond - and there's no real way to escape the increase.
• Smaller ISPs can struggle to compete on scale economics. Larger ISPs benefit from volume discounts on backhaul, peering, and equipment. Smaller ISPs sometimes struggle to match larger ISPs on pricing without sacrificing quality elsewhere.
• Network operator dependence. The whole model rests on the network operator behaving well. If Vumatel started to favour certain ISPs, the model would break down. This is why merger conditions on the Maziv group emphasise non-discriminatory wholesale access.

Some fibre operators in South Africa have historically operated on more closed models, particularly in residential estates where the developer signed an exclusive deal with one operator at the construction stage. In those estates, residents have no ISP choice - they have to buy from the single operator that has exclusivity. The result is consistently higher retail prices and lower customer satisfaction. The contrast helps clarify what open access actually delivers.

The Maziv merger conditions explicitly require Vumatel to maintain open access. This was one of the most important conditions imposed by the Competition Appeal Court and ICASA, precisely because the open-access nature of the network is what makes the retail market competitive.

For fibre customers, open access creates real opportunity. The practical steps are:

• Compare ISPs on the same line speed before signing up. Use our best fibre deals table. The price difference between cheapest and most expensive ISP at the same speed tier can be R200 per month or more.
• Migrate when your circumstances change. If your ISP raises prices or your support deteriorates, you have leverage. Migrating is straightforward.
• Use sign-up promotions. Most ISPs offer free first month, free router, or free installation for new customers. Customers who migrate every 12-18 months can effectively keep getting promotional pricing.
• Check ISP reputation, not just price. A R50 monthly saving is meaningless if the support is unusable. Check MyBroadband forums and Hellopeter ratings before committing.

Open access is one of the most important structural features of the South African fibre market, and it's worth defending. It produced a more competitive retail market than the country had under ADSL, it kept innovation high, and it made fibre infrastructure investment compatible with retail competition.

The risks to open access are mostly regulatory and structural. If wholesale pricing rises faster than retail pricing can absorb, the smallest ISPs get squeezed out, and the diversity of the retail market shrinks. If merger conditions aren't enforced, network operators can quietly start favouring affiliated retail businesses. If new fibre rollouts shift toward closed models in estates and apartment blocks, the open-access proportion of the market shrinks.

For now, the model is working. More than 75 ISPs are competing for South African fibre customers on the Vumatel network. That's a healthy number, and it's the direct product of the structural choice Vumatel made in 2014 to be a wholesale-only, open-access network operator.