![]() Type SERVER 1.1.1.1, press Enter, and NSLOOKUP changes its default DNS server to the IP address 1.1.1.1. You've proved that your DNS server can't find an IP address for a domain, but will other DNS servers do any better? NSLOOKUP makes it really, really easy to find out. Although there is one more quick trick you should try. If NSLOOKUP displays the site IP address, it looks like DNS is working correctly.īut if NSLOOKUP displays an error like ' can't find : Non-existent domain', that's pretty conclusive evidence that something is screwed up at the DNS level. Now type the name of any domain you can't currently access, press Enter, and NSLOOKUP queries your DNS server. NSLOOKUP launches and displays the name and IP address of your current DNS server (or 192.168.* if devices get their DNS via your router's connection.) ( NSLOOKUP is often available on Macs and Linux – try opening it from your terminal window.) To try this on Windows, click Start, type CMD and open Command Prompt, then type NSLOOKUP and press Enter. If the server can't find the IP or displays an error, that points to a DNS difficulty. (Image credit: Microsoft) Test your DNS serverĪ more advanced test is to manually ask your DNS server for the IP address of the domain you're trying to access. If you can reach it, choose Chrome as your preferred browser, enter the URL in the address box and click Test Now! Browserling uses its own DNS to connect to the site, so if it gets you access and your own connection doesn't, it could be a DNS issue. No other connections available? Try the virtual online browser Browserling (opens in new tab). (Just for a quick connectivity test, though – free Wi-Fi can be a security risk causing more problems than it solves, and you should always use at least a cheap VPN to stay safe on these networks.) Or if you're on the move and already using your mobile network, look for a free hotspot you can try. If you've problems on a mobile device connected to your home Wi-Fi, for example, switching to your mobile network allows you to test a site with new DNS servers. Try the same websites on a connection using another DNS server, and if they're now accessible and work correctly, it looks like you have a DNS issue. The simplest DNS problem to diagnose is an issue with your current server. It's this mix of problems across multiple sites that's one of the tell-tale signs of a DNS problem. You might see image placeholders, empty spaces where content used to be, or buttons and other site features not working as they should. What if DNS allows you to access, but not the domain where it hosts its images, scripts or contact forms? Partial failures can also cause odd-looking page loading issues. Maybe you'll access sites a, b and c as usual, but x, y and z all seem to be down. Other DNS failures are partial, though, affecting some websites only. It might look like your entire internet is dead. If your DNS fails entirely then it's likely you'll see timeouts, DNS or other errors with all your internet apps. (Image credit: Microsoft) What does a DNS issue look like? Easy.īut what if DNS fails, and the server doesn't always return the IP address you need? Then you'll see major web problems. It can only find and download websites when it has a server IP address, such as 199.232.198.114.Ī device normally handles this by asking your ISP's DNS server to translate the domain name into an IP address. Your browser can't access a web server from a domain name like, for instance. Peek under the hood, though, and there's a lot more going on. Enter the URL in a browser, wait a few seconds, website appears, that's about it. Get security, streaming and more with today's best VPNsĪccessing a new website looks simple, at least from user's point of view.In this article we'll look at how to identify these, and then get your system working again. Internet connectivity problems across multiple websites can look like something you'll never fix yourself, but that's not always true – they're often related to DNS (Domain Name System) problems. That only makes it more frustrating when you suddenly get major page loading issues, though, dead websites everywhere, and all kinds of other web-based complications. Sure, you know there's a lot of low-level tech making this happen, but who cares when it just works? Browsing the web is so easy, simple and straightforward that it feels almost automatic.
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