why my sites some times give server not found error

[gudumba]

hi folks,

I am having one big problem with 2 of my websites.

The both sites some times dont resolve and just give "server not found error", even I try to open them from Google search results page.

If I try by proxy, I can open.

( this site sometimes dont open if i put 'www' in url. it will be open if i remove 'www' in url )

whats the problem. ?

Please, let me know.

[edited by: phranque at 11:53 am (utc) on Mar. 31, 2008]
[edit reason] No urls, please. See TOS [webmasterworld.com] [/edit]

[rocknbil]

Well, I can tell you in **my** case this is always related to my Internet connection, which is via satellite. It could be anything from your computer to whatever route it takes to your web site. I have found no reliable way to isolate the problem. Add to this the drop usually can't be duplicated, give it 5 seconds and it goes away.

One approach is to Google up and bookmark a couple of those web site checking tools. When your site goes missing, hit one of them and check your site through them. This gives you a "third person" view that eliminates your connection as the problem.

Another: I have a friend who is on a different connection, in a different part of the state, and we oftn converse on IM. If he's connected when one of my sites drop, I shoot him the URL - in almost all cases, the site is fine from where he's connected.

This is a good question and some tools to find the point of failure would be very helpful.

[gudumba]

hi,

When one of my sites missed, I will try to open it by proxy site. the site will be opened.

and I try to ping the site name from windows cmd prompt...

I will get this error.

Ping request could not find host --------.com. Please check the name and try again.

I browse net from 3 diff locations daily from 3 diff ISPs. one from office, one from my room and another from cafe.

I get this missing errors, very frequently..

some of my site users complained me about this....

is there any wrong in domain registrtion....or hosting it by whm..

[rocknbil]

Well that sure sounds like a hosting problem to me, though they would probably not admit anything. During these "down times," try a tracert command, it may help find a point of failure. It could be their bandwidth provider or host itself. I has a similar situation that would trace right up to the last router before the hosting computer, and fail. Turned out in this case it was their bandwidth, not the host server or internal DNS.