Every time you open a website, an app or a video call, your device first asks a DNS server to translate a name like supernxt.com into an IP address. If that lookup is slow, everything feels slow — pages hesitate before they start loading, apps spin before they connect. Changing your DNS server is one of the simplest, free tweaks you can make, but "the best DNS server" is not the same for everyone. Here is how to choose properly in the UAE.
What DNS Actually Affects (and What It Doesn't)
DNS speed affects how quickly a connection starts, not your download speed. A faster resolver makes browsing feel snappier, especially on pages that load content from many different domains. It will not make a large download finish faster or fix a weak Wi-Fi signal.
DNS also affects:
- Which server you are sent to: content delivery networks (CDNs) often use the location of your DNS resolver to pick a nearby server. A resolver that makes you look far away can send you to a distant CDN node.
- Privacy: your resolver sees every domain you look up.
- Security and filtering: some resolvers block known malware, phishing or adult domains.
The Main Public DNS Options
| Provider | Primary / Secondary | Notable for |
|---|---|---|
| Cloudflare | 1.1.1.1 / 1.0.0.1 | Speed focus, privacy commitments; 1.1.1.2 blocks malware, 1.1.1.3 adds adult-content filtering |
| Google Public DNS | 8.8.8.8 / 8.8.4.4 | Very large global network, reliable |
| Quad9 | 9.9.9.9 / 149.112.112.112 | Blocks known malicious domains by default, non-profit |
| OpenDNS (Cisco) | 208.67.222.222 / 208.67.220.220 | Optional filtering and FamilyShield; business plans available |
| AdGuard DNS | 94.140.14.14 / 94.140.15.15 | Blocks many ads and trackers at DNS level |
All of them also support encrypted DNS (DNS over HTTPS and DNS over TLS) on supported devices and browsers.
Your ISP's own resolvers — from du or e& (Etisalat) — are also an option, and they are often physically the closest to you.
Why Speed Depends on Where You Are
You will find plenty of articles declaring one resolver "the fastest". The honest answer is that it depends on:
- The nearest point of presence (PoP): big DNS providers run servers in many cities. Whether your query is answered in the UAE, elsewhere in the Gulf, or in Europe depends on how the provider and your ISP connect to each other.
- Your ISP's routing: du and e& peer with networks differently, so the same resolver can be quick on one and noticeably slower on the other. Business fibre, home fibre and 5G home internet can also take different paths.
- Cache hits: popular domains are usually already cached. Big resolvers with many users tend to have warm caches, which helps.
- Time of day: evening congestion can change results, so test more than once.
That is why we don't publish a ranking with fixed numbers — results from someone else's connection are not a reliable guide to yours.
How to Test Which DNS Is Fastest for You
The quickest way is our free Fastest DNS Finder at supernxt.com/tools/fastest-dns-finder/. It runs lookups against the major public resolvers from your own browser, on your own connection, and shows which ones respond fastest for you. Run it a few times, ideally at different times of day, and look for a resolver that is consistently fast rather than one that won a single test.
If you prefer the command line:
- On Windows, macOS or Linux, run nslookup example.com 1.1.1.1 and compare the response time against other resolvers (tools like dig show the query time directly).
- Test a mix of domains — some popular, some less common — because uncached lookups reveal more about a resolver than cached ones.
- Compare against your ISP's default DNS as a baseline.
How to Change Your DNS
- Whole home or office (recommended): change the DNS settings in your router so every device benefits. On many du and e& supplied routers this is under LAN or DHCP settings.
- Windows: Settings, Network and Internet, your adapter, DNS server assignment, Edit.
- macOS: System Settings, Network, your connection, Details, DNS.
- Android: Settings, Network, Private DNS — enter a hostname such as one.one.one.one or dns.google (this uses encrypted DNS).
- iPhone/iPad: Settings, Wi-Fi, tap the (i) next to your network, Configure DNS, Manual.
Always add a secondary server so you are not left without DNS if one is unreachable.
Which One Should You Pick?
- For pure speed: whichever resolver is consistently fastest in your own tests.
- For families: Cloudflare 1.1.1.3, OpenDNS FamilyShield or AdGuard Family filter adult content without installing software.
- For extra malware protection: Quad9 or Cloudflare 1.1.1.2.
- For fewer ads: AdGuard DNS, though some sites may break if they rely on blocked domains.
- For businesses: a managed DNS filtering service tied into your firewall, with logging and per-group policies, usually beats a public resolver alone.
A note on CDN accuracy: some resolvers do not pass partial client location to CDNs for privacy reasons. In most cases this makes no visible difference, but if a particular streaming or download service feels slower after switching, test it against your ISP's DNS too.
Common Pitfalls
- Changing DNS on one device and expecting the whole network to improve.
- Mixing a filtering resolver as primary with an unfiltered one as secondary — devices may use either, so filtering becomes unreliable.
- Forgetting that some corporate VPNs override DNS while connected.
- Assuming a slow website is a DNS problem. If DNS tests are fine, check latency with our Ping and Latency Test (supernxt.com/tools/ping-latency-test/) and your bandwidth with the Speed Test (supernxt.com/tools/speed-test/).
For Businesses: DNS Is Part of Your Security Stack
In an office, DNS is also a security control. Filtering malicious domains at the DNS layer stops a large share of phishing links and malware call-backs before they connect, and DNS logs are invaluable during an incident investigation. This works best when it is configured centrally on the firewall and combined with proper network segmentation.
Next Step
Run the Fastest DNS Finder on your own connection — it takes under a minute and costs nothing. If you manage an office network and want DNS filtering, a faster internet path or a full network health check, contact Super Next Technologies at supernxt.com/contact.