Thread: Some sites not opening

I am not able to access/open certain websites

Connection - bsnl dataone ul750,
Router/modem - Billion bipac 5200S,
Mtu setting in Vista - 1455 (Current),
Dns - OpenDns,
I stay in Bangalore.

Before also i faced such problem, but by some help by the members, i was able to access all sites (which in know). Initially my mtu was 1492 or 1500. I used Tcp optimizer and changed mtu to 1454 and everything was normal. But yesterday again the same problem started, and i am not able to access these sites (there could be others as well)
microsoft.com
thepiratebay.org
yahoo.com
ubuntu.com
gmail.com

Bsnl gave me UtStarcom UT300R2U router wich initially worked correctly but later on also gave same problem and after some days it was not able to save the settings (username/password, etc) i.e whenever i did save/ save&reboot itwould reset all the settings so it became useless. Since from my previous tata connection i was having billion 5200S so i am using this. Other than the sites not opening issue, the outer is working correctly.

i have already tried these mtu settings, 1452, 1454, 1455*, 1492, 1500.
Google.com works with these mtu sett.
Using current i am able open cisco.com (before no)

I tried some testing on some websites with this program mturoute -
elifulkerson.com/projects/mturoute.php]mturoute.exe
And since i was getting 1455 as maximum mtu for most websites, so its 1455 now.
One more problem is i am not able to access many websites in Google Chrome which are working in firefox. Before, Chrome was perfectly on all sites.

Please help me...

In the modem settings, go to DNS settings and change to open DNS as follows:

Primary: 208.67.222.222
Secondary: 208.67.220.220

Even I was not able to open some sites like IBNLive, Gmail and yahoo. I tried yesterday night as well as today morning.

And also try this:

go to start > run > type in cmd and enter

now type in this:

ipconfig /flushdns

Then hit enter and now close the command window and try opening the sites mentioned above with the dns settings provided by Just4kix above

It should work

And dont forget to leave a comment here if it worked or otherwise

just4kix, I am already using OpenDns. And after posting the problem, i also changed my vista's mtu to 1454 using tcp optimizer. Admin as u suggested i flushed dns, but still it does'nt work. i am not able to open IBNLive as ensine said.
Atleast thanks everyone for replying and for help, since after almost 1 hour or so there were no replies! i don't know what to do now.

I am also facing this problem (I am from Bangalore). Yahoo and gmail loads only sometimes but is very slow. But some other sites like this forum is loading as usual. this problem started from yesterday night

update : Now all sites have started working fine for me as usual

Originally Posted by mtly

I am also facing this problem (I am from Bangalore). Yahoo and gmail loads only sometimes but is very slow. But some other sites like this forum is loading as usual. this problem started from yesterday night

maybe bangalore connections have been affected. 2 of my friends also use bsnl, they are also facing same poblems.

me too facing the same problem but its fixed now

Okay now everthing is working alright. i did not do anything except flushing the dns and wandering around this website. maybe dns flushing worked out. it probably takes time. Or the problem rectified by bsnl. Anyway thanks everyone and specially Admin for flushing command. i have saved the command for later reference!

I don't think it was a dns problem. Flushing helps only if it is dns problem. I think there was some problem in some nodes in the internet network and they are now rectified.

I'm able to open sites without altering any settings.

it is not an all india prob

iam bsnl user in Trivandrum,Kerala


Ididnt hav any prob

ya my system also same problem what i do?

Originally Posted by lokeshlksh

ya my system also same problem what i do?

Clear your internet cache
Delete your cookies

n try again

hello sir same problem

In dns setting enter first one as the dns provided by bsnl and second one an open dns ip.. This should solve this issue.

i dont no my proper ip and dns adresses pls tell me how will change

Sorry 4 da late reply. I assume windows Xp/Vista (2000?). if it hasn't been solved try clearing dns cache by using 'ipconfig /flushdns' command in cmd prompt, as Admin suggested. Type 'control netconnections' in run dialog, to get various connections you have, open 'Local Area Coonection' (name may differ), open up 'internet protocol version 4' dialog and select option 'use the following dns server addresses' and type both dns addresses here and click ok.

OpenDNS addresses are -
208.67.222.222
208.67.220.220

Instead of changing these settings in windows, use can change these settings in ur modem itself, so all operating systems would use those conf.
This is client-side only solution. But i think problem is with bsnl servers itself. Since, yesterday again same problem occured here but today net is working fine. Hope tht helps.

most websites open....some youtube videos dont open......
none of my torrent(s) download ...
there some kind of mix-up in the IPs

//


help plz

how to clear out my cache .....will it also help me start downloading torrents again ????

To clear cache run the following command from command prompt window:

ipconfig /flushdns

Originally Posted by just4kix

In the modem settings, go to DNS settings and change to open DNS as follows:

Primary: 208.67.222.222
Secondary: 208.67.220.220

i changed DNS to above values it works fine.Thanks

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- just4kix

Originally Posted by just4kix

In the modem settings, go to DNS settings and change to open DNS as follows:

Primary: 208.67.222.222
Secondary: 208.67.220.220

Hey just4kix,

Thanks man. I was having similar issues as well, and this 'fix' seems to have worked.

^^"Yeh Dabur ki Baal jivan ghutti ki tarah hai, sabhi bacchon ko diya jata hai"

Pun intended.

Originally Posted by Aviascorp

Hey just4kix,

Thanks man. I was having similar issues as well, and this 'fix' seems to have worked.

Thanks.

Those values are values for OpenDNS. Google it and you will find more details.

Originally Posted by mickey

^^"Yeh Dabur ki Baal jivan ghutti ki tarah hai, sabhi bacchon ko diya jata hai"

Pun intended.

This is how Muthu (from Saajan Chale Sasural) would say ...

Originally Posted by Muthuswamy

'Sirji, idea kooch change. Eesko hum Dabar Chawanprash bolega jeee'