But you can change that (and you may want to) in order to speed up some of your Internet activity. If you have standard DSL, cable, or fiber Internet access, your router connects to your ISP’s DNS server. By default, it uses the DNS server that its router connects to.
How to check added dns servers mac mac#
You probably don’t even know which DNS server your Mac uses. But some DNS servers can be slow enough to hobble your activity. This usually isn’t a terrible problem as an extra quarter-second to load a webpage won’t kill you. But if the DNS server your Mac uses is slow or overloaded, this can make some of your Internet activities slower.
In normal circumstances, the amount of time to send a request to a server and get a response is in the tens of milliseconds you can’t even blink your eyes that fast. Each of these requests needs to be answered, and the time it takes to answer them contributes to the time it takes to load a webpage. But when you load a webpage, there may be elements from dozens of different servers, all of which your computer needs to request from different locations. Your email client only looks up two addresses per account: one for sending email, and another for receiving. It’s not that big a deal when you’re checking email, for example. If you use a slow DNS server, this can make your Internet usage slower. You can use OS X’s Network Utility to find the numerical equivalent of a domain name from the Lookup tab.Īs you can imagine, some DNS servers respond more quickly than others. If you copy the numerical address and paste it in your browser’s address field, you can still visit that site, assuming the site itself isn’t down. Sometimes DNS servers have glitches, but you can always access a website by using its numerical IP address. You might even want to do this if you’re having trouble accessing a website and need to do so in a hurry. Click the Lookup tab, enter a domain name, then click Lookup. In your /Applications/Utilities folder, there’s a tool called Network Utility. You can find the numerical address for a website, if you want. When you click on a link, your browser sends a request to a Web server to load a page, but that request passes through a DNS server, which stores this information in huge databases containing every single domain recorded listed together with its numerical address. This is what lets your computer find, keeping track of the fact that this domain name corresponds to an IP address of 70.42.185.230, and that numerical address is hosting Macworld’s webpages.
How to check added dns servers mac zip#
Do you ever wonder how you can click a link on a webpage and quickly zip to another page on a server halfway around the world? Or send an email message to aunt Alice or uncle Bob, using just their simple email addresses? All this depends on DNS, or the Domain Name System.
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