How We Tested
South Africa has the most developed internet infrastructure on the African continent, but geographic challenges and reliance on submarine cables mean DNS performance varies significantly between cities. We tested from Johannesburg, Cape Town, Durban, and Pretoria using residential connections from Telkom, Vodacom, MTN, and Afrihost. Each resolver was tested 200 times per location over multiple days.
South Africa's internet traffic relies heavily on submarine cable systems including SAT-3, WACS, SEACOM, and the newer Equiano cable that landed in Cape Town. Johannesburg, being inland, depends on backhaul from coastal landing points. This geographic reality means DNS resolvers with nodes in Johannesburg and Cape Town perform significantly better than those routing through Europe or the United States. Our testing captures these differences to help South African users choose the best resolver for their location.
DNS Server Rankings for South Africa
1. Cloudflare 1.1.1.1 — 15 ms median
Cloudflare is the fastest DNS resolver for South Africa. It operates anycast nodes in Johannesburg and Cape Town, giving South African users competitive latency. Median response time across our test locations was 15 ms, with Johannesburg achieving 10 ms. Cloudflare supports encrypted DNS protocols and maintains a strict no-logging policy verified by annual audits.
2. Google Public DNS 8.8.8.8 — 22 ms median
Google's DNS resolver benefits from peering with South African ISPs and Google Cloud's global infrastructure. Median response time was 22 ms, with Cape Town showing the best results at 18 ms. Google DNS logs anonymized data for limited periods, which is worth considering for privacy-focused users.
3. Quad9 9.9.9.9 — 25 ms median
Quad9 operates an anycast node in Johannesburg, giving South African users a median response time of 25 ms. Its built-in threat blocking provides protection against malicious domains. Quad9's Swiss-based privacy framework and DNSSEC validation make it a secure option despite slightly higher latency.
4. NextDNS — 18 ms median
NextDNS has a node in Johannesburg, providing South African users with 18 ms median response times. Its customizable ad and tracker blocking at the DNS level makes it a versatile choice. The free tier includes 300,000 monthly queries with full analytics and filtering customization.
5. AdGuard DNS 94.140.14.14 — 32 ms median
AdGuard DNS does not have dedicated South African nodes, routing through European servers instead. This results in 32 ms median latency. It remains useful for network-wide ad blocking but is not optimal for speed-focused users in South Africa.
6. OpenDNS 208.67.222.222 — 48 ms median
OpenDNS routes South African traffic through its US and European infrastructure, resulting in 48 ms median latency. Its content filtering capabilities through FamilyShield remain functional, but speed-conscious users should look elsewhere.
7. Telkom DNS — 28 ms median
Telkom South Africa operates DNS resolvers that averaged 28 ms median for Telkom subscribers. Performance was inconsistent, with Cape Town users experiencing better latency than Johannesburg users. Telkom's DNS applies local content restrictions and does not support encrypted DNS natively.
Quick Recommendations
Best Overall for South Africa
Cloudflare 1.1.1.1 is the fastest DNS resolver for South African users with 15 ms median response times. Its Johannesburg and Cape Town nodes cover the major population centers well, and its strong privacy protections are a bonus.
Best for Privacy
Quad9 9.9.9.9 provides Swiss nonprofit governance with no logging at 25 ms median. The built-in malware blocking adds security, which is valuable given the prevalence of phishing targeting South African users.
Best for Ad Blocking
NextDNS offers flexible DNS-level filtering with Johannesburg nodes at 18 ms latency. Customize block lists and monitor traffic through a comprehensive dashboard.
Best for Vodacom or MTN Users
Mobile network users on Vodacom and MTN will benefit most from Cloudflare 1.1.1.1, as South African mobile networks often have congested ISP DNS servers. Cloudflare's anycast infrastructure handles traffic spikes better than ISP-operated resolvers.
How to Change Your DNS in South Africa
Changing DNS in South Africa is similar to other countries. Access your router at 192.168.1.1 or 192.168.0.1, log in with your credentials, and update DNS settings under network configuration. For Telkom, Vodacom, and MTN routers, the settings are typically found under Advanced Settings or Internet Configuration.
For device-level changes, Windows users can modify IPv4 DNS properties in Network Settings. macOS users can add DNS servers under System Settings > Network. Android users can set Private DNS to a provider like one.one.one.one. iOS users configure DNS per Wi-Fi network. Device-level changes are particularly useful for South African users who rent routers from their ISP and may not have full admin access.
South Africa's Protection of Personal Information Act (POPIA) provides privacy protections, but your ISP can still log your DNS queries when using their default resolvers. Encrypted DNS through Cloudflare or Quad9 keeps your browsing destinations private from Telkom, Vodacom, or MTN, and adds protection on public Wi-Fi in South African cafes, hotels, and airports.
Frequently Asked Questions
What is the fastest DNS server for South Africa?
Cloudflare 1.1.1.1 is the fastest DNS resolver for South Africa with a median response time of 15 milliseconds. Its nodes in Johannesburg and Cape Town provide the best coverage for South African users.
Does changing DNS improve speed on Telkom or Vodacom?
Yes. Telkom's DNS averages 28 ms, while Cloudflare responds in 10 to 18 ms from most South African locations. The difference compounds across the many domains a webpage loads, especially for content hosted on international servers.
Is Cloudflare DNS fast in Cape Town?
Yes. Cloudflare has nodes in both Johannesburg and Cape Town. Cape Town users typically see response times of 12 to 18 ms, benefiting from the Equiano cable's improved connectivity to Cloudflare's network.
Why is my ISP DNS slow in South Africa?
South African ISP DNS servers handle millions of subscribers on infrastructure that often prioritizes cost over performance. International DNS queries are particularly slow on ISP resolvers because they route through limited international bandwidth. Public anycast resolvers often have better peering arrangements for South African traffic.
Are there DNS servers located inside South Africa?
Yes. Cloudflare has nodes in Johannesburg and Cape Town. NextDNS operates a node in Johannesburg. Quad9 has a Johannesburg node. These local points of presence significantly reduce latency compared to resolvers that route through Europe.
Test Your DNS Speed from South Africa
Benchmarks give a useful reference, but your connection is unique. Run our DNS speed test to measure live response times from your browser. The tool tests 17+ resolvers simultaneously and ranks results by performance.
Run DNS Speed Test
For more comparisons, visit our global fastest DNS rankings or best DNS servers list.