As /u/Paliak9 as explained what DNS is, I will go more into why you would want to use different DNS providers. People use googles DNS as it is very highly available, it is not often this service goes down so people expect reliability from this. Other DNS providers can offer things such as child friendly browsing by blocking websites that have adult or unwanted content.
The other two answers are excellent. 4.2.2.2 is not so much a server as a IP address of a DNS server. as has been said, it belongs to Level 3, and is part of the block of IP addresses that belongs to Level 3. It was registered Dec 1, 1992, so i what exactly is 4.2.2.2 DNS? what is it used for? | Yahoo Mar 09, 2010 Complete IP Address Details for 4.2.2.2 DNS cache poisoning attack site.bl it pl - 2011-09-16 Level 3 Communications' public DNS servers 4.2.2.2-4.2.2.6 - 2012-05-24 Anyone know what this address is. dig - If Google provides public DNS 8.8.8.8 and 8.8.4.4
Google DNS has been popular for a long time and later came the IBM DNS dubbed Quad9. In the last week, we have known 1.1.1.1, new DNS faster and private than those of Google launched by Cloudflare. DNS: 8.8.8.8 vs 9.9.9.9 vs 1.1.1.1. The arrival of Cloudflare’s DNS has shaken up a segment that seemed quite dominated by Google and OpenDNS
May 13, 2016 · What is 4.2.2.2? I’ll get to the story in a bit, but first I want to start from the basics. Skip this and the next section if you just want to know the story behind the DNS server. 4.2.2.2 is one of the easiest to type of a collection of 6 DNS servers at 4.2.2.1 through 4.2.2.6 (originally only 1-3). 4.2.2.2 is a DNS server owned by, I believe, Verizon. Its full name, as a reverse lookup will tell you, is vnsc-bak.sys.gtei.net. A lot of people use it because its address is easy to remember. DrDave242 Principal Support Engineer There are several reasons why you may want to use alternative DNS servers: Speed up your web browsing; Improving your security; Backup solution when your ISP servers are down. Here is a list of Free public DNS servers. Google Public DNS Google Public DNS – Free DNS server list. # For IPv4: nameserver 8.8.8.8 nameserver […] IP Info - 4.2.2.2. The lookup details for the requested IP 4.2.2.2 located in United States are purely informative. Although we try to be precise with the lookup location and other details regarding a certain IP or domain we cannot guarantee 100% accuracy.
The free DNS servers listed above as Level 3 will automatically route to the nearest DNS server operated by Level 3 Communications, the company that provides most of the ISPs in the US their access to the internet backbone.
As /u/Paliak9 as explained what DNS is, I will go more into why you would want to use different DNS providers. People use googles DNS as it is very highly available, it is not often this service goes down so people expect reliability from this. Other DNS providers can offer things such as child friendly browsing by blocking websites that have adult or unwanted content. Public DNS | Google Developers The Domain Name System (DNS) protocol is an important part of the web's infrastructure, serving as the Internet's phone book: every time you visit a website, your computer performs a DNS lookup. Complex pages often require multiple DNS lookups before they start loading, so your computer may be performing hundreds of lookups a day.