A plain-English buyer's guide for South African businesses. No FNO jargon, no marketing fluff, just what you actually need to know before signing a contract.
Fibre internet is high-speed broadband delivered through fibre-optic cables that carry data as pulses of light. In South Africa, fibre is the fastest, most reliable connectivity option for businesses, with speeds from 10 Mbps to 1 Gbps and typical pricing between roughly R299 and R2,000+ per month. Unlike copper ADSL or LTE wireless, fibre delivers consistent speeds whether it's 9am or 9pm, doesn't degrade with distance, and handles modern workloads like VoIP calls, video conferencing, and cloud apps without breaking a sweat.
This guide walks you through everything you need to understand before choosing a fibre provider: from how the FNO/ISP split actually works, to what you should genuinely budget for, to the questions that separate a good ISP from a regrettable one. When you're ready to compare specific providers, we'll send you to the Fibre comparison page. When you're ready to buy, we'll match you with three real ISPs serving your address.
The short answer. Fibre internet delivers business broadband over fibre-optic cable, with consistent speeds from 10 Mbps to 1 Gbps and pricing from roughly R299 to R2,000+ a month. In South Africa you buy from an ISP that resells capacity on a Fibre Network Operator covering your address. For most offices, a 50–100 Mbps business plan with an SLA is the sweet spot.
WhichVoIP is an independent telecoms comparison site. We sell no fibre and take no FNO or ISP affiliate commission, so nothing on this page is pay-to-rank. The pricing bands, speed-tier guidance and SLA benchmarks below are compiled from three primary sources: the published rate cards and coverage maps on each provider's own website; the wholesale documentation of the five Fibre Network Operators (Openserve, Vumatel, Frogfoot, Octotel and Metro Fibre Networx); and ICASA's licensing framework for electronic communications services. Industry-wide statistics, such as homes passed or customer-satisfaction surveys, are drawn only from recognised South African trade press and used for context – never as a substitute for a provider's own published price.
What we weigh: real installed cost (monthly fee plus router rental plus installation amortised over the contract), contention ratio, business SLA and uptime guarantee, support hours, and contract flexibility – not headline megabits. We exclude consumer-only marketing claims, unverifiable "fastest in SA" superlatives, and any provider whose pricing we cannot confirm at source.
This guide is reviewed and re-dated every 90 days; South African fibre pricing moves quickly, and a buyer guide that is twelve months stale is worse than none. Where a figure here differs from a provider's live rate card, the rate card wins – check it before you sign. Last reviewed: June 2026.
Fibre optic cables carry data as pulses of light through hair-thin strands of glass. The signal travels at roughly two-thirds the speed of light and, unlike copper, it doesn't degrade meaningfully with distance, doesn't suffer from electromagnetic interference, and isn't affected by weather or temperature. That's why a fibre connection in Sandton runs at the same speed as one in Stellenbosch on the same plan, and why you can stream a 4K video call from your office without it stuttering when someone heats up the kettle.
In practice, the cable runs from the Fibre Network Operator's nearest exchange to a small fibre termination box mounted on the outside of your building. From there, a separate fibre cable is pulled inside to your router. Your router converts the light signal into a normal Ethernet/Wi-Fi signal that your devices can use. The whole installation typically takes a half-day on site, plus 7–21 days of FNO scheduling beforehand.
You don't need to understand wavelength multiplexing, GPON architecture, or the difference between single-mode and multi-mode fibre to choose a provider. The ISP handles all of it. What you do need to understand is the commercial model, which is where most South Africans get confused.
This is the single most important concept in South African fibre, and it trips up almost everyone the first time. There are two layers:
You almost never buy from the FNO directly. You pick an FNO that covers your address (using the FNO's coverage map), then you pick an ISP that operates on that FNO. An ISP that only sells on Vumatel can't help you if your building is in an Openserve-only area, no matter how good their reviews are.
| FNO | Coverage strength | Typical use case |
|---|---|---|
| Openserve | Largest national footprint | Default in most metros and suburbs |
| Vumatel | Strong in JHB & CT residential | Estate and complex installs |
| Octotel | Cape Town metro | CT-based residential and SME |
| Evotel | Transparent wholesale pricing | Smaller towns and gaming-grade tiers |
| Metro Fibre Networx | JHB business districts | Office parks and commercial |
| Frogfoot | Aggressive growth, SME focused | Newer business parks |
Skip ahead to compare the 9 ISPs we've tested side by side.
Headline pricing is misleading because it ignores three things: installation, router rental, and exit fees. Here's what business customers typically pay across the most common speed tiers:
| Speed | Entry (residential) | Business SLA | Best for |
|---|---|---|---|
| 10 Mbps | R299–R450 | R650–R900 | Solo founders, single-site SME |
| 25 Mbps | R399–R599 | R750–R1,100 | 2–5 person teams |
| 50 Mbps | R549–R799 | R899–R1,400 | 5–15 person offices |
| 100 Mbps | R699–R999 | R1,150–R1,800 | 15–40 person offices, VoIP heavy |
| 200 Mbps | R899–R1,299 | R1,499–R2,400 | 40+ users, video production, SaaS |
| 1 Gbps | R1,499–R2,000 | R2,500–R6,500+ | Enterprise, large call centres |
Installation usually costs R2,000–R5,000, though it's often waived if you sign a 24-month contract. Router rental adds R50–R150/month if not bundled, which means an entry plan advertised at ~R299 can quietly become ~R380/month once router rental is added. Early exit fees can be 50% of your remaining contract value, so committing to 36 months when you're not sure about your office lease is a bad idea.
The honest truth: most South African businesses overpay for speed they don't use, then under-invest in the things that actually matter (contention, SLA, support). Here's a sober view of what each tier is realistically good for.
Fine for one or two people doing email, Slack, web browsing, and the occasional Zoom call. Don't go below 25 Mbps if anyone on the team takes back-to-back video calls.
The sweet spot for most SMEs. Comfortably handles 5–20 users, multiple simultaneous video calls, cloud storage sync, and a desk phone or two. This is where most businesses should start.
Genuinely necessary if you have 40+ users, run a contact centre, push a lot of video, or move large files daily (architects, video editors, data teams). Below 40 users, more speed mostly means a more expensive bill.
Every fibre ISP buys bandwidth in bulk from the FNO and shares it across customers. The ratio of bandwidth to users is called the contention ratio. A 1:1 ratio means each customer gets a dedicated line; 1:50 means 50 customers share one pipe.
Premium ISPs like Cool Ideas advertise low contention (1:20 or better) and actually deliver the speeds you pay for. Budget ISPs may oversell during peak hours (South Africa's busy time is roughly 6pm to 10pm), meaning your 100 Mbps line might give you 95 Mbps at 3pm and 35 Mbps at 8pm. For business users on standard hours, this matters less. For anyone running shift work, ecommerce, or cloud workloads at night, it matters a lot.
The frustrating bit: ISPs are not required to publish their contention ratios. Your best signal is independent reviews from real users in your area: Reddit r/southafrica, MyBroadband forums, and our review pages all surface this.
A Service Level Agreement is the legal commitment your ISP makes about how the service will behave. Five things to look for:
If your business depends on internet (ecommerce, SaaS, contact centre, VoIP), the SLA is the single most important line in the contract. If you're a freelancer who can move to a coffee shop when the connection drops, the SLA matters less and the price matters more.
If you only read one section of this guide, read this one. Here's the order of operations:
That's it. Skip any of these steps and you'll probably be unhappy within six months. Follow them and you'll save a few hundred rand a month and avoid the most common contract regrets.
Consumer and business fibre often run on the same physical line, but the contract underneath is different, and that difference is what you are actually paying for on a business plan. Four things separate a business fibre service from a home one:
If your office runs VoIP, cloud apps or a call centre, the business SLA and contention ratio matter far more than another 100 Mbps of headline speed. Compare business SLAs side by side on the fibre comparison page, or get matched with three ISPs serving your address.
Vetted fibre ISPs, filtered by FNO, speed, SLA, and price.
These are the sixteen ISPs that fit most businesses, scored against the same four-axis rubric, ordered by review score rather than by what anyone pays us. This is the list you actually buy from; the network operators behind them are covered in section 2 above. Voice and PBX providers that resell connectivity are deliberately not listed here unless their own review evidences a fibre product.
| ISP | Who they are | Consider them if |
|---|---|---|
| Afrihost | Large consumer-scale ISP selling across most fibre networks, month to month, with a published service-credit policy | You want no contract and a supplier whose service record you can check publicly |
| RSAWEB | ISP spanning home fibre through to enterprise services, with its own data-centre capability | You need connectivity and hosting from the same supplier |
| Cool Ideas | Retail ISP with the strongest independent technical ranking in the SA market | Network performance matters to you more than price or bundled extras |
| Axxess | ISP selling fibre across multiple carriers alongside 5G and LTE on flexible terms | You want a wireless fallback on the same account as your fibre |
| Webafrica | One of the largest retail ISPs in South Africa, selling across most fibre networks | You want the reassurance of scale and pricing you can see before you call |
| Cybersmart | Established ISP pairing uncapped fibre with a broad hosting catalogue | You are buying connectivity and hosting as one decision |
| Mweb | Long-standing South African broadband brand, now owned by Webafrica, with all tiers published | You want a name you already recognise and pricing published in full |
| Liquid | Africa's largest independent fibre network operator, part of Cassava | You have sites beyond South Africa and want them on one operator's network |
| ECN | Established operator selling business fibre tiers alongside wireless | You are connecting several sites and want one established operator across them |
| Vox Telecom | Large national ICT provider under the Vivica Group, with fibre as one line among many | You are buying fibre as part of a wider IT stack from one large supplier |
| Paratus SA | Carrier running its own infrastructure across Southern Africa | You have sites in neighbouring countries and want them on one network |
| BitCo Telecoms | Business-only operator running an uncontended backbone and three South African data centres | You cannot share bandwidth with anyone and need that written into the contract |
| Yaxxa | Integrator sourcing business fibre across multiple upstream networks rather than owning one | You want someone to find the right network for each site rather than sell you theirs |
| ICTGlobe | Wholesale-oriented provider covering fibre, LTE, wireless and satellite | You are building a design that mixes connectivity types across sites |
| United Telecoms | Enterprise-focused provider selling fibre and wireless with a contracted uptime figure | You want uptime committed in the contract, not described in a brochure |
| Herotel | Vertically integrated operator: it builds the network and sells the service | You are in a town the open-access networks have not reached |
Compare these providers side by side →
These four are reviewed against the same four-axis rubric but sit outside the shortlist for most buyers. They remain worth a look if one of them already serves your business or you need a single national supplier: MTN Business, Vodacom Business, Telkom and Supersonic.
