Stop using the same DNS for every device (do this instead to block ads and boost speeds)


Your DNS provider affects every internet-connected device in your home, which is why one of the most common networking tips is to switch to a faster provider like Cloudflare or Google Public DNS. While that’s often an improvement over your ISP’s default DNS, using the same DNS for every device is rarely the best approach.

A smart TV, a work laptop, your kids’ tablet, and a smart light bulb all have different priorities. Instead of treating them the same, you can match each one with a DNS service that best fits how it’s used.

Keep ads off your smart TV or streaming device

Cut ads and telemetry where it matters the most

VIDAA OS on a Hisense OLED TV. Credit: Ismar Hrnjicevic / How-To Geek

Smart TVs are notorious for tracking your viewing habits, and streaming boxes aren’t far off. ACR (Automatic Content Recognition) is the main culprit, which tracks almost everything your TV is displaying, regardless of the source.

Some of the best DNS providers for smart TVs are NextDNS, AdGuard DNS, and Control D. They effectively act as firewalls for your streaming devices, blocking mainstream ad and tracking domains and preventing your smart TV from sending your data back to the manufacturer or ad services.

On top of that, smart TVs have low-power processors that are easily overwhelmed by sponsored content, which is why ad-blocking DNS providers can truly shine on them. They do a fantastic job of cleaning up your smart home interface and overall experience.

Once you switch the DNS, you’ll instantly notice fewer ads on the home screen, side banners, and pop-ups. Many privacy-oriented DNS resolvers will also block telemetry and privacy trackers by blacklisting the analytics servers that the TV manufacturer and other associated companies use.

Note that your custom DNS won’t block regular ads on streaming platforms like YouTube. This is because the ads use the same domain as the video you’re trying to watch, so if it tried to block the ad, it would also block the video.

Regardless, an ad-blocking DNS provider is a massive upgrade when it comes to keeping your TV’s data more private and away from prying eyes.

The good news is that most of the major smart TV platforms, including Android/Google TV, Samsung Tizen OS, and LG webOS, allow you to set a custom DNS directly on the device.

However, it’s also worth noting that some TVs will try to bypass the custom DNS by resolving through a different public DNS if they recognize that a query is being blocked.

The Unifi Dream Router 7.

Brand

Unifi

Range

1,750 square feet

The Unifi Dream Router 7 is a full-fledged network appliance offering NVR capabilities, fully managed switching,a built-in firewall, VLANs, and more. With four 2.5G Ethernet ports (one with PoE+) and a 10G SFP+ port, the Unifi Dream Router 7 also features dual WAN capabilities should you have two ISP connections. It includes a 64GB microSD card for IP camera storage, but can be upgraded for more storage if needed. With Wi-Fi 7, you’ll be able to reach up to a theoretical 5.7 Gbps network speed when using the 10G SFP+ port, or 2.5 Gbps when using Ethernet. 


Sandbox your kids’ devices with network-level filtering

Let the DNS help you with parenting

App tray open on the Amazon Fire HD 10 Kids Tablet. Credit: Sergio Rodriguez / How-To Geek

There are more ways than ever to help parents protect their children from malicious content online. However, parental controls and blacklisting websites by hand in router settings can only go so far in restricting what children can access on their personal tablets, gaming consoles, and phones.

While parental control apps do exist and can do a wonderful job at keeping children safe online, they can also be quite heavy and may slow down devices in the process. Family-focused DNS providers work just like any other DNS provider, except they heavily filter malicious domains and often even enforce SafeSearch on Google.

A few good options for kid-safe DNS providers include OpenDNS FamilyShield, CleanBrowsing Family Filter, and Cloudflare for Families.

Please note that a DNS focused on family protection is only the first line of defense. It can block obvious threats and bad domains, but it cannot block explicit content inside apps like TikTok and Instagram. In other words, don’t rely on DNS alone to do the job as a parent; it’s important to also monitor installed apps, the websites they access, and their screen time.

Feed your computers and phones pure performance and reliability

Fast lookups for smooth browsing

While blocking telemetry and ads on smart TVs and adult websites on children’s devices using DNS providers with heavy filtering is important for privacy and safety, there are still a few devices where you may want to prioritize performance instead.

This includes your smartphone, desktop computer, laptop, gaming consoles (the ones you don’t share with your kids), and so on.

Every single website load, update, and background process has to go through your DNS provider.

If you use a DNS provider with heavy filtering, you may sometimes run into issues where you can’t even access content in an app or website—I’ve had that happen several times. My wife uses a company-owned website for her work, and she had trouble accessing it because I was running a restrictive DNS provider.

On top of that, if you prioritize fast response times that resolve queries quickly regardless of where the request is going, a performance-first DNS provider makes the most sense.

Besides, your computer or phone likely already has several layers of security built in, so you don’t need to rely on your DNS as much for protection—especially if you’re careful about the websites you visit.

The most commonly recommended DNS providers are actually the ones suited for this scenario. These include standard options like Cloudflare and Google Public DNS, or Quad9 if you want to retain some real-time threat protection (which I personally use as my secondary DNS).


Cloudflare's 1.1.1.1 DNS open in Firefox.


I switched DNS providers three times before I found the hidden setting breaking my internet

Your DNS provider isn’t the reason some websites refuse to load

Quarantine sketchy IoT gadgets in a DNS sinkhole

Restrict devices that don’t need internet freedom

AdGuard dash being displayed on a computer screen. Credit: Ismar Hrnjicevic / How-To Geek

Smart home devices are some of the “chattiest,” most insecure pieces of hardware many of us own. While they can’t serve you ads like smart TVs, many of them constantly pipe telemetry back to their manufacturers in the background. Worse still, they’re often the easiest devices to exploit, making them a common entry point into your entire network.

Fortunately, you can lock them down using a dedicated home DNS sinkhole. Instead of filtering incoming ads, the sinkhole intercepts outbound requests, dropping sketchy telemetry and tracking connections before they can escape your LAN.

You can choose to run a cloud-based sinkhole like NextDNS or Control D, or you can take it a step further by running your own DNS server using Pi-hole or AdGuard Home on a Raspberry Pi, NAS, homelab device, or even an always-on PC.

Again, just like smart TVs, these gadgets can sometimes bypass your custom DNS settings using hardcoded paths. If you want absolute protection, you’ll need to couple your sinkhole with firewall rules in your router’s settings.


DNS shouldn’t be a one-size-fits-all setting

Different devices play different roles in your life, which means they can benefit from a tailored DNS resolver. While you could absolutely run a single unrestricted DNS across your entire network, your home setup will usually be a lot more efficient, more secure, and easier to manage if you match the DNS to the device.


ASUS Wi-Fi 7 router.


You’re setting up custom DNS wrong—and it’s breaking your network troubleshooting

Most people don’t need custom DNS settings on every device, and there’s a better way to approach it



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Recent Reviews


1,000W, 10-port charger for $45... predictably disappointing.

1,000W, 10-port charger for $45… predictably disappointing. 

Adrian Kingsley-Hughes/ZDNET

Follow ZDNET: Add us as a preferred source on Google.


ZDNET’s key takeaways

  • Things that look “too good to be true” invariable are just that.
  • This example got dangerously hot in a short period of time before dying. 
  • There’s no legitimate charger that comes close to delivering on the 1,000W promise.

Being a tech reviewer for a living means that I get offered some very interesting things. Not interesting as in Bugatti supercars or jewel-encrusted Fabergé eggs, but interesting as in “this thing could easily be a fire hazard — want to take a look?”

Also: The best GaN chargers of 2026: Expert tested

Submissively, I often say yes. And I’m glad I did with the most recent pitch, because it was very interesting indeed.

Meet the “interesting” charger

This time around, the thing of interest was a charger that claimed to deliver an incredible 1,000W through its ten ports — four 140W USB-C ports, four 100W USB-C ports, and two 20W USB-A ports. 

The person who bought this charger told me that they’d plugged it in, used it to charge their phone for “a few minutes,” got worried when it became “a little hot,” and unplugged it.

That's a lot of promise... but (spoilers), they don't deliver!

That’s a lot of promise… but (spoilers), they don’t deliver!

Adrian Kingsley-Hughes/ZDNET

The unit was suspiciously light and plasticky, especially given its built-in power supply. Compare this to Ugreen’s Nexode 500W charger, which weighs a hair under 5 lb.

There was also a slight whiff of melty plastic, which made me think that this had been a bit more than a little hot. 

Also: This $4 router reboot timer is the cheap internet fix I didn’t know I needed – and it works reliably

Color me suspicious, but I had a gut feeling that the only way this charger would be able to push out 1,000W would be if it caught fire. 

Turns out I wasn’t far wrong.

How long would it last? Answer: Minutes

Talk is cheap. It was time to test the charger. 

So I plugged it in, turned it on, and started using it. Within a couple of minutes of starting to use it, I noticed a few things:

  • No matter what I tried, I couldn’t persuade the charger to deliver more than about 60W from any of the ports. 
  • As for peak output, I managed to get close to 250W.
  • The power output was very uneven and noisy, fluctuating wildly. The more ports I used, the worse it got.
  • The unit got very hot to the touch very quickly, even under light loads. 
  • But… before I could get the thermal camera out to check how hot it got, there was a pop and the unmistakable smell of “Magic Smoke.” The charger had been sent to Silicon Heaven within minutes.

Annnnd… POP! This is the moment the charger gave up the ghost.

Adrian Kingsley-Hughes/ZDNET

Diagnosis time

Time to take it apart and have a look inside. For an item that plugged into the mains power, this unit was shockingly easy to take apart. 

A thin sheet of easily removable plastic is a that separates curious hands from live AC power.

A thin sheet of easily removable plastic is a that separates curious hands from live AC power.

Adrian Kingsley-Hughes/ZDNET

And even unplugged and broken, it was capable of delivering zaps! If the case came off while this was plugged into an outlet, it could very easily be deadly.

There’s charge still in some of the capacitors, and these could deliver quite a zap despite the unit being broken and unplugged!

Adrian Kingsley-Hughes/ZDNET

After getting inside, the unit was filled with a grey goo that I’d seen in a previous disappointing charger I’d taken apart. This is a thermal paste that’s used to try to dissipate the heat generated by the components. 

It’s not really going to work because it’s sealed in a plastic box with no effective heatsink. It’s a token gesture at best. At worst, it creates a mass that’ll slowly heat up and hold temperature because it’s got no way to get rid of it.

Behold the grey goo!

Adrian Kingsley-Hughes/ZDNET

Next to this goo was a bank of capacitors — the black cylinders in the photo — which were the cause of the failure. They’d clearly overheated, with three of them showing signs of bulging.

The problem!

Adrian Kingsley-Hughes/ZDNET

Well there’s the problem!

I also noticed that two of the components — bridge rectifiers that are used to turn AC mains into DC — have been fixed on an angle to make the touch a metal heatsink. It’s not really an effective way to cool down components.

The bottom line

Another “too good to be true” device bites the dust. It’s not the first one I’ve come across, and it won’t be the last.

Moral of the story here is that manufactures are using big number marketing — in this case 1,000W and masses of ports — to scalewash poor quality products. 

This might be a half-decent product if it was built to deliver 100W, but there’s no end of competition at that end of the market. Silkscreen “1,000W” on the outside, sprinkle in a few reviews that feel scripted and fake, and all of a sudden it’s interesting and exciting… right up until it blows up. 

Also: My top 7 laptop-bag essentials now, after decades of remote work

I know of no 1,000W charger. In fact, the 500W Ugreen Nexode is the highest-power charger that I’ve tested that’s legit. And the price is also legit — $250. 

But it’s built to deliver on what it promises and is packed with safety features, including “tip-over protection,” which cuts the output when the unit tips over and prevents it from falling on its side, where it can’t dissipate heat effectively. Now that’s an attention to safety that I like to see in a product that handles that much power. 

But if you want 1,000W of output, you’ll have to buy two and duct tape them together.





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