Respected Amiyo Sir and Others,
An article might be of some interest for those who wish to change the DNS
server for fast browsing. Its just for information, even I had tried DNS on
my dialup, and had noticed the same as Amiyo sir. Read on below or click on
the link provided:
http://www.labnol.org/internet/changing-dns-servers/18996/
Before You Change your DNS Server, Read this!
Public DNS services, like OpenDNS or Google DNS, may offer more reliable and
faster lookups than the DNS server of your ISP but in some cases, you may
get much better download speeds if you continue to stick to your ISP’s DNS
server. Here’s why.
You know about Content Delivery Networks like Amazon, Akamai, etc. that have
data centers located across the globe and they serve content from the one
that’s closest to you geographically. A site like Adobe hosts its files on
Akamai so when you download that 1 GB Photoshop installer from Adobe.com,
the file will be served to you from the Akamai data center that’s nearest to
you.
A CDN uses your computer’s IP Address to determine your current location and
then redirects you to the server that’s nearest to you. However, if you use
a public DNS service, the CDN may not get to know your accurate location as
your IP address is masked by the public DNS Service. The CDN could therefore
serve content from a server that’s not closest to you and hence it will take
more time to download files.
A recent story published in The Economist discusses this problem in much
greater detail.
Are CDNs serving you content through the shortest path?
Considering the fact that all major websites – from Microsoft to CNN to
YouTube – use CDNs for delivering content, it is important to know if your
are getting served from the nearest located server. How do you find that
out?
Step 1: Download the Dig tool and run it against a domain (like
trials.adobe.com).
C:\labnol>dig trials.adobe.com A
trials.adobe.com. 687 IN CNAME trials.adobe.com.edgesuite.net.
a1326.g.akamai.net. 20 IN A 203.106.85.127
a1326.g.akamai.net. 20 IN A 203.106.85.40
Once you have the IP Addresses, you can find the server’s physical location
using this online tool. If you are in India and request a file through Adobe
(Akamai CDN), it should be served from their data-center in Asia and not the
one in North America.
203.106.85.127 MY Malaysia Simpang Tiga TMnet Telekom Malaysia
203.106.85.40 MY Malaysia Simpang Tiga TMnet Telekom Malaysia
When I asked OpenDNS about this issue, their representative told me that it
is something ‘fixable’ and that they’re working on a solution where the DNS
Server itself passes on the client’s location to the CDN. Unless this
happens, as Atul Chitnis rightly points out, non-ISP DNS services “kill the
benefits of CDNs like Akamai.”
-----Original Message-----
From: Amiyo Biswas
Sent: Tuesday, April 12, 2011 4:44 PM
To: [email protected]
Subject: [AI] Faster Browsing Using Open DNS.
Hello,
I recently came across an article on faster browsing using open dns. I have
tried it, not the whole of it though, and I think, net surfing has really
become slightly faster. Seconds matter in this fast world, you know.
Visit the following site for the article:
http://gconnect.in
Just a word of caution: make sure that you don't mess up things. Remember to
take all kinds of precaution, such as noting down existing dns values or the
steps you are following.
With best regards,
Amiyo Biswas.
Cell: 9433464329
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