What would cause a computer not to access certain sites?

[sygyzy]

I posted this before without much help so I am trying again.

Once in a while my computer cannot access a site. It is not a problem with the site being down, or slow. It's not even technically a 404 because it can't even find the server. It's not just my computer, but any computer on the LAN. I even tried on a Pocket PC.

Also I can verify that the sites are up by calling friends up nearby.

I am not blocking any sites or running any firewalls, outside of the built in one from the router. So what is going on?

Any ideas?

 

[RagingBITCH]

Is it all sites that are being blocked or a few in particular? Also, is your entire internet connection down during that time? Might just be something with your ISP

 

[sygyzy]

Just one at a time. Right now it's the forums at head-fi.org

And no, my internet connection has never gone down at this location.

 

[jsouth]

Check the restricted site on IE (internet option--->security)
Check the content adviser (internet option--->content)
Also check the privacy should it be setup to default ?

 

[sygyzy]

Checked those. I try the sites on both IE and Firebird. Even FTP. I cannot even ping them.

 

[HKSturboKID]

Did you check your host file to see if you accidentally d/l something that mod the host file. Try that.

 

[sygyzy]

Very good idea! I did think of this yesterday. My host file is empty except for the standard MS instructions.

 

[skyking]

It sounds like a dns issue. Try 128.21.230.121 for the site itself, and I will get the forums in a minute....
128.21.50.111
That is www4.head-fi.org/forums/

If you get through using IP address, then it is a problem with your ISP's DNS servers, most likely. you can easily make your own host file entry to cover the issue, this is usually quicker than any other solution.

 

[sygyzy]

Tried that as well. Cannot get through with IP using IE or Firebird. Is this the weirdest problem or what?!

 

[skyking]

yes it is

 

[sygyzy]

Help me...please!

 

[Neurodog]

Try to put a static IP instead of dynamic for you local area connection.

 

[sygyzy]

Have used a static IP for the last few months, currently using static as we speak.

 

[Ghost]

Ever try to run a tracert when you're having problems connecting to see if one of the hops on the way is not working?