Thread: Merged-Manchester Browsing Slow.
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Old 18-01-2004, 19:58   #126
rdhw
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Join Date: Oct 2003
Location: Cambridge
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Re: Merged-Manchester Browsing Slow.
Quote:
Originally Posted by Basisboy
today I am finding sites are not there ... lots of them like:-
http://www.w3schools.com & www.screwfix.com was not there earlier. ... is it a problem with the DNS I am using?
To distinguish between a DNS problem and a proxy cache problem, try pinging the sites in question, for instance, open a command prompt window and type:

ping www.w3schools.com

If that produces the error message

Ping request could not find host <name>, Please check the name and try again.

then this indicates a DNS problem (or a user spelling problem).

Other results from ping, such as "Reply from xxx.xxx.xxx.xxx" or "Request timed out" indicate that the DNS system is working.

"Reply from... " shows the site is online.
"Request timed out" indicates either that the site is down or that it is firewalled against ping.

Messages in browser windows about DNS errors cannot be relied upon, as they might be web proxy errors.
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