DNS stands for Domain Name System and it's used for IP to name translations. For example, it's easier to remember google.com, instead of 209.85.135.104. DNS servers are like huge tables that keep these translations. They work recursively. This means that if a DNS server does not find answers for a certain request they forward it to a superior server, and so on. This storing process can be compared to the process of storing names and phone numbers into your address book.
Worldwide, the DNS servers are ordered hierarchically. Each Internet Service Provider has at least two of them. This enlightens the resolution process.
Why there's a need for DNS Servers? -there are billions of IP addresses worldwide, and like stated before, names are easier to remember than numbers -many domain names and IP addresses change daily -new entries (domains and IP's) show up over night due network expansion
With that many requests needing handling, the domain name service would be easily overwhelmed if it wouldn't have a caching system, or a well set up procedure of resolving incoming requests. Therefore, the DNS resolving algorithm can be fastened with the help of a caching algorithm. The entries are cached locally and recursively depending on an adjacent value called Time to Live (TTL). This value indicates every DNS Server containing the record that it should keep it the record for TTL time value, until requesting a refresh or an update for the record. This is why when DNS records get modified there is a certain time until all the recursive DNS servers update their entries as well.
Stated the above, it's clear that DNS Services are required for the good use of the Internet.
Also known as one of the special systems used in naming computers and services that are associated with the use of the Internet, Domain Name System (DNS) is the one responsible for the translation of hostnames of computers to Internet Protocol addresses. In order to do the task efficiently, this system uses several servers known to computer users as DNS servers. By accessing these servers, people can solve the difficulties that they experience when connecting to the Internet. For computer users who are in search for DNS servers, it is best that they follow the simple and easy ways of finding them.
General Instructions for Searching These Servers
Computer users can follow some general steps when searching for several DNS servers. First, they need to use the nslookup tool in their computers in order to easily find these servers. It is also important to use NS in setting the search type of the tool to look for different valid nameservers. Afterwards, type the domain name of the server that users like to find.
Searching for Lincsat Servers and MCDI Servers
When searching for these servers, computer users need to follow the general steps discussed above. However, they should type lincsat.com in the domain name when searching for Lincsat servers and mci.com for MCDI servers. Afterwards, nslookup tool will provide non-authoritative and authoritative answers. In the case of Lincsat servers, non-authoritative answers that they can find are lincsat.com nameserver – ns2.anywarenetworks.com and lincsat.com nameserver – ns1.anywarenetworks.com. Meanwhile, non-authoritative answers for MCDI servers include mci.com nameserver = auth61.ns.uu.net, mci.com nameserver = auth310.ns.uu.net, and mci.com nameserver = auth50.ns.uu.net. For those who are interested in authoritative answers for MCDI DNS servers, nslookup tool offers these information; DNS3.mci.com internet address = 199.249.19.2 and DNS4.mci.com internet address = 199.249.18.2.
Searching for Shaw Cable and Comcast Servers
The steps in searching for Shaw Cable and Comcast servers are similar. Following the general steps, nslookup tool will provide non-authoritative and authoritative answers. For instance when finding Shaw Cable servers, answers are as follow: non-authoritative answer – shaw.ca nameserver = ns10sc.cg.chawcable.net and shaw.ca nameserver= ns7.no.cg.shawcable.net. Meanwhile, in the case of finding Comcast servers, the tool will provide the following answers: non-authoritative answer – comcast.net nameserver = dns02.jdc01.pa.comcast.net, comcast.net nameserver = adns.cmc.comcast.net, and comcast.net nameserver =dns01.jdc01.pa.comcast.net.
On the other hand, for people who are in search for authoritative answers, they can see this information when they search for Shaw Cable DNS servers, ns10sc.cg.shawcable.net internet address = 204.209.208.51. Finally, authoritative answers for Comcast DNS servers are dns01.jdc01.pa.comcast.net internet address = 68.87.96.3 and dns02.jdc01.pa.comcast.net internet address = 68.87.96.4.
Learning the easy and simple steps in finding several DNS servers are helpful for those who usually experience difficulty connecting with the Internet. With the use of nslookup tool, computer users can easily search the servers that they like to use. Having knowledge on this matter can save people time and effort finding solutions for the problems that they usually encounter when they try to use the Internet. Thus, once again, computer users are reminded to carefully follow the general procedures to get the information that they need.
Both Robert D. Thomson & Alex Gwen Thomson are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
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