DNS, find great server DNS Benchmark
First of all you will learn quickly What does it mean DNS: Stands (D)omain Name System. The "translates" a DNS domain name to an IP address ( direct settlement process ) and vice versa from one IP address to a domain name ( inverse resolution process ). Here are some explanations about the function of servers DNS and their contexts of use (from Wikipedia):
- The ability to assign a textual name easy to store to a server (e.g. a site the world wide webgreatly improves the) use of the service, as humans are easier to remember textual names (while hosts and router can be reached using the numeric IP address). For this reason, the DNS is critical to the internet's widespread even among non-technical users, and is one of its most visible features.
- Is it possible to assign multiple names at the same IP address (or vice versa) to represent different services or functions provided by the same host (or multiple hosts that provide the same service). This flexibility is useful in many cases
- Etc ...
DNS Benchmark is a free software that performs a detailed analysis (with lots of performance comparisonabout 200) Server (also known as resolver). It is developed by Steve Gibson in 2010 and the official site is http://www.grc.com/dns/benchmark.htm.
Start the test and compare the performance
To make the games "benchmark"just click on the tab Nameservers and then on Run Benchmark (next picture). The program identifies automatically the server from your system riquadrandoli in black ( nel mio caso i server by Google ).
At this point, we just have to wait for DNS Benchmark face the dirty work and the speed of the server. Having regard to the amount of IP to test, it can take several minutes, so go to smoke a cigarette or drinking a cup of tea! Here is a sample screen of the work programme:
As you can see I highlighted the small checkbox with "Faster Sort First“. Leaving this active control faster servers will automatically be positioned at the top of the list. The bars redheads verdi and Blue are to indicate the Cached Lookup, the Uncached Page Lookup and the Dotcom Lookup. We explain their significance along with other terms that can be found in the program:
- Cached lookups – the time it takes the server to return a domain name that already exists in the cache memory of the Resolver.
- Uncached page lookups – the time it takes the server to return a domain name that cannot be found in the Resolver cache memory.
- Dotcom lookups – the time spent in consulting the Nameserver chosen by a Resolver domain. com. ( This last figure is tralasciabile ’ )
- Reliability – the number of requests was lost (unanswered) during the benchmark. Most are low and the better the Reliability (it is expressed as a percentage, an excellent value hovers around the 100%).
- Rebinding protection – If and when the block addresses Resolver Private IP and non-routable.
Then the DNS server more efficient for my connection is ...
…That at the top of the list in the tab Nameserver After the benchmark! In my case the best servers are to Wind (oddly enough my ISP ) e quello di Google. Li vedete riquadrati di nero perché ho cambiato subito le impostazioni aggiornando i Resolver! 😀
Link to download DNS Benchmark
Before I conclude I leave you a short list of servers DNS most commonly used in Italy. To find answers to the most frequently asked questions about DNS, you can take a look here: Sicurezza Domain Name Servers: Domande e risposte
List of the most commonly used DNS in Italy (Aggiornamento 13/01/2016)
(The link takes you to the official source)
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