In May their DNS servers just crashed and failed miserably for a good few hours. That’s what inspired this site. Since then, though I haven’t had the problem myself, I’ve read and heard that there are still problems getting to certain sites. Sam has written in with what sounds like confirmation:
purchased TalkTalk in late July, when we were told that super-fast 8mbit broadband would be with us by September. The phone line was set up with a little problem but has otherwise been fine. We are enjoying our free calls. However, upon switching our Pipex broadband service to TalkTalk in early August, I quickly realised that problems were to be plentiful. I’m currently at speeds up to 2mbit, which, although disappointing, still betters our Pipex speed. I should be with 8mbit broadband in July next year. I have had no downtime, no disconnections or speed irregularities, however I’d be interested to know if other people are having difficulties with being unable to access certain websites. I’ve seen no mention of this on your blog but I am quite certain that it is a TalkTalk network problem and not to do with my computer or my phone line, as TalkTalk constantly tell me. Sites I cannot access include msn.com (inc. Messenger), pcworld.co.uk, egg.com, talktalk.co.uk (!) and hmv.co.uk. Some others are incredibly slow.
Essentially, I’d like to know if others are having this problem and whether it has been resolved by TalkTalk, yourself or by the process of LLU.
Ok guys, this is how you test to see if records are being resolved:
1. Click ‘Start’
2. Click ‘Run’
3. Type ‘cmd’ into the box
You should get a screen that looks like this:
What you’re looking for is the line that says: ‘Pinging pcworld.co.uk [18.104.22.168]’
That number in brackets means that pcworld.co.uk is being translated by a DNS server. (You don’t need to know what these are, only that they are necessary.) The request timed out isn’t necessarily something to be concerned about. Often times pings will be blocked.
This is an example of an unsuccessful lookup:
See? It can’t find the host.
Now, how you troubleshoot this is by using a utility in Windows XP called ‘nslookup’
An unsuccesful lookup looks like this:
That command tells you two things.
1. The DNS server is taking queries. That’s that Opal Telecom address
2. The DNS server can’t find the domain.
Now, there may be a few problems with the domain I typed in. The first is that the domain isn’t valid (which is the case here for demonstration purposes.) The second is the domain is valid (like PC World) but isn’t being resolved properly.
Try it and see what you get.
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