General Discussion
  >> General Broadband Chatter


Register (or login) on our website and you will not see this ad.


  Print Thread
Standard User Mstudden
(newbie) Sun 08-Feb-15 10:52:47
Print Post

Can't access amazon.co.uk (since Friday) and don't know why!


[link to this post]
 
Can anyone suggest why, since approx. the morning of Friday Feb 5th I have been unable to access any Amazon web pages?

I'm with Vispa, and as far as I can tell my DNS settings are all correct. I can get to anywhere else, I just can't get into Amazon. Whisky. Tango. etc.

The same problem manifests the same way on my wife's iPad, which is using the same router, but doesn't manifest on our smartphones if we use the Vodafone connection.

Given that the router settings haven't been changed for months (at least not by us!), and given that they appear to be correct anyway, is it possible this has something to do with the DNS at Vispa?

This may have saved me some money over the weekend, but it's bugging the heck out of me.

I'm reasonably PC literate, but only have a very basic knowledge of networking/ADSL.

Any suggestions as to what I can/should try are welcome!

Failing any luck today I'll have to try to get though to Vispa on the blower tomorrow from work; not an attractive prospect...

Edited by Mstudden (Sun 08-Feb-15 12:24:20)

Standard User jelv
(knowledge is power) Sun 08-Feb-15 15:17:48
Print Post

Re: Can't access amazon.co.uk (since Friday) and don't know


[re: Mstudden] [link to this post]
 
Can you access by IP address: http://178.236.6.251 ?

jelv

Plusnet user since November 2001 - not sure for how much longer

Edited by jelv (Sun 08-Feb-15 15:18:55)

Standard User Mstudden
(newbie) Sun 08-Feb-15 18:20:01
Print Post

Re: Can't access amazon.co.uk (since Friday) and don't know


[re: jelv] [link to this post]
 
Hmmm. Thanks for that!

It seems to work initially if I load the IP directly - so at least I can tell that no-one has been helping themselves to multiple copies of ghastly Radiohead CDs while I've been locked out, or buying anything else that would shame me eternally.

I get through as normal, but moving around anywhere within Amazon - my wish list for example - and it's no-go as before. So does that mean that there's an odd Amazon shaped hole in Vispa's DNS tables for some bizarre reason?

Why on earth would that happen?

Edited by Mstudden (Sun 08-Feb-15 18:23:45)


Register (or login) on our website and you will not see this ad.

Standard User ffox
(committed) Sun 08-Feb-15 19:10:07
Print Post

Re: Can't access amazon.co.uk (since Friday) and don't know


[re: Mstudden] [link to this post]
 
Try flushing your local DNS cache:

http://www.wikihow.com/Flush-DNS

Plusnet Unlimited Fibre Technicolor TG582n , St Ives Cambs (EMSTIVE)
Standard User Apprentice
(knowledge is power) Sun 08-Feb-15 21:17:46
Print Post

Re: Can't access amazon.co.uk (since Friday) and don't know


[re: Mstudden] [link to this post]
 
You could change the DNS servers used by computer and/or router.

http://www.howtogeek.com/167239/7-reasons-to-use-a-t...

http://www.howtogeek.com/164981/how-to-switch-to-ope...

http://www.howtogeek.com/howto/38869/how-to-setup-yo...

http://pcsupport.about.com/od/browsers/f/change-dns-...

plusnet user
Standard User ian72
(eat-sleep-adslguide) Mon 09-Feb-15 14:37:30
Print Post

Re: Can't access amazon.co.uk (since Friday) and don't know


[re: Apprentice] [link to this post]
 
Doing a ping of www.amazon.co.uk would give back the IP address the DNS is serving to ensure that it isn't a bad DNS entry.
Standard User locutus
(experienced) Mon 09-Feb-15 18:05:57
Print Post

Re: Can't access amazon.co.uk (since Friday) and don't know


[re: Mstudden] [link to this post]
 
Have you tried turning your router off and on again?

--
Views expressed are mine and not necessarily those of my employer.
Hyperoptic 1Gig http://www.speedtest.net/result/2063605290.png
Standard User Mstudden
(newbie) Mon 09-Feb-15 19:34:41
Print Post

Re: Can't access amazon.co.uk (since Friday) and don't know


[re: locutus] [link to this post]
 
Thankyou to all who suggested avenues of exploration or advice. I had tried all of the obvious - turned things off and on again, flushed cache etc. - but to no avail.

A call to Vispa's support desk first thing this morning revealed that they were already aware of the issue, which they described as "looking a lot like a DNS issue, but we don't think it actually IS a DNS issue - we think it's a routing thing of some kind...".

Whatever, they fixed it, and all is now back to normal (touches wood, strokes rabbit's foot etc.).

Which just goes to show that if something looks like a DNS issue, and behaves like a DNS issue, it may still not respond to any DNS-related work-arounds, because it still may NOT be a DNS issue.

Edited by Mstudden (Mon 09-Feb-15 19:36:05)

Standard User caffn8me
(knowledge is power) Thu 05-Mar-15 03:04:35
Print Post

Re: Can't access amazon.co.uk (since Friday) and don't know


[re: Mstudden] [link to this post]
 
Amazon does have a slightly uncommon way of doing things. It's all very well to ask if a particular IP address is reachable but www.amazon.co.uk's IP address can (and frequently does) change every sixty seconds as that's the TTL (time to live) value for the hostname's IP address to be valid.

At the moment I'm getting;

www.amazon.co.uk.	60	IN	A	54.239.36.155

www.amazon.co.uk.	60	IN	A	178.236.6.251

www.amazon.co.uk.	60	IN	A	176.32.108.186

when I do queries greater than sixty seconds apart. Consecutive queries often give different results.

Under OS X, there is a process called mDNSResponder which locally caches DNS lookups made by applications. Windows has a similar system. I suspect these cache the IP addresses for much longer than the specified 60 seconds.

On occasion it means that when I try to open www.amazon.co.uk, the website cannot be reached by my browser as the stored IP address relates to an Amazon server that's gone offline. From a command line DNS query I get a valid IP address instantly. Closing and restarting the browser doesn't restore web access and the mDNSResponder process needs to be restarted to flush its cache before the website works again.

So, there are oddities about Amazon.

Sarah

--
If I can't drink my bowl of coffee three times daily, then in my torment, I will shrivel up like a piece of roast goat

Spiders on coffee - Badass spiders on drugs
Standard User mikebear
(regular) Thu 05-Mar-15 06:55:55
Print Post

Re: Can't access amazon.co.uk (since Friday) and don't know


[re: jelv] [link to this post]
 
I've just tried the link and find it is blocked by Kaspersky AV

"The requested URL cannot be provided

URL:

http://178.236.6.251/

Blocked by Web Anti-Virus

Reason: phishing URL "


Make of that what you will.
  Print Thread

Jump to