on 12-07-2017 00:55
on 12-07-2017 12:40
Thanks Tim,
It's reasuring that its not all of Virgin Media Land thats seeing the old site. Its just frustraiting not knowing who is and isnt seeing the updated site.
I had to move from hosting my site with GoDaddy because their server resources were so pitiful that just trying to update the site caused it to go down. I have a new service I want to launch for my business but before I start sending out an email blast to potential clients, I need to know they are going to see the relivant information when they visit my site.
I guess I will just have to delay the launch for a few days while VM get around to updating their local DNS cache across the country.
I might give them a call in a bit, but Im pretty sure you're right that the faults team on the phone won't be able to help. After all, unplugging the router for 30 seconds isnt going to solve this..... (I tried! haha).
If anyone knows of a way to get the Forum Team to check out this thread quicker (without being rude and offencive just to get them to look), that would be great.
on 01-10-2017 22:45
Did this ever get resolved as I’m having EXACTLY the same issue? Everything works fine except Virgin Media. I’ve tried accessing my new site from several different providers and mobile networks and they all work fine EXCEPT Virgin Media. It’s so incredibly frustrating and annoying.
on 01-10-2017 22:52
@thespirituk wrote:Did this ever get resolved as I’m having EXACTLY the same issue? Everything works fine except Virgin Media. I’ve tried accessing my new site from several different providers and mobile networks and they all work fine EXCEPT Virgin Media. It’s so incredibly frustrating and annoying.
It's not a fault. It's down to peoples poor understanding of how DNS works. When did you change your DNS and what was the old TTL value?
Tim
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on 22-10-2017 10:01
Same issue with me, again.
I moved my site last year to a new server and it took ages for VM to find the new site, but all my customers and people using a different ISP could see it within minutes.
MINUTES..
Yesterday my site was moved and as of now, many hours later, 12+. VM are still pointing to the old site and I can not see it or get any of my business e-mails.
Why is VM the slowest at this?
Why do VM think they can year on year under perform in this area and not care?
on 22-10-2017 10:06
22-10-2017 10:10 - edited 22-10-2017 10:11
I'm going to be a little picky.
That should be - up to 72 hours.
I have my own DNS set up and the current cache time on that is set very low. So Virgin only caches it for 30 minutes. Of course, if I increase the TTL in my DNS entry Virgin will cache it for longer.
Tim
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on 22-10-2017 10:11
I only ever have problems with VM.
That is just how VM works, they are slow.
I mean 72 hours?
Why only update every 3 days?
The internet is full of people complaining about this aspect of VM.
A quick search will reveal VM are renown for being poor in this regard.
22-10-2017 10:34 - edited 22-10-2017 10:41
You need to understand how DNS works properly to realise what is happening. BTW Virgin Media users are not the only ones to complain.
https://community.bt.com/t5/Connected-Devices-Other/BT-DNS-Refresh/td-p/770726
Most web designers know about designing websites but don't do their homework when it comes to DNS.
If you want to find out how long before the cache entry updates use the following method - I'm going to assume you have Windows here:
I've done it twice here, a few minutes apart.
Windows PowerShell Copyright (C) 2016 Microsoft Corporation. All rights reserved. PS C:\Users\timdu> Resolve-DnsName www.timothydutton.co.uk Name Type TTL Section IPAddress ---- ---- --- ------- --------- www.timothydutton.co.uk A 1800 Answer 77.68.89.100 PS C:\Users\timdu> Resolve-DnsName www.timothydutton.co.uk Name Type TTL Section IPAddress ---- ---- --- ------- --------- www.timothydutton.co.uk A 1473 Answer 77.68.89.100
Note the TTL section. This is how long the entry is cached for in seconds. In the first one, because the lookup's not been done in a while we get a fresh entry queried from my DNS server.
1800 seconds = 5 minutes.
The second entry taken a few minutes later shows this
1473 seconds.
So until this value counts down Virgin's (or any other public server for that matter) won't check my DNS server but will use the stored value.
Who sets the time a DNS entry will be cached for?
Whoever controls your DNS entry. I could easily change mine to the standard 86400 seconds or 24 hours. And Virgin would cache it for that amount of time instead.
Tim
Edit - Note that if you are moving a website you should reduce the cache time of your old DNS entry a few days beforehand, so that when you do change the downtime is minimised.
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on 22-10-2017 10:45
All I know is that:
My site was moved about 22 hours ago, and on VM I can not see it or get e-mails. After about 22 hours!
Other people could see it within minutes of the move...
I have just switched to open dns, and can see the site and get my e-mails.
VM are still pointing me to the old site.
I have a solution, a free solution as the ISP I pay are not good enough and that should be all VM need to know.
22-10-2017 10:58 - edited 22-10-2017 11:02
I'm sorry but Virgin are not underperforming They only cache my entry for 5 minutes because that is how I set it up. If you don't know how DNS works, that's not Virgin's fault. My own registrar advises me that it can take up to 72 hours for DNS changes to propagate.
The reason you can get your site through OpenDNS is because, it hadn't cached your site recently. In fact when I've tried them they seem to use 3 DNS servers in rotation. So I can, and have actually ended up with two different results from them after just changing a DNS entry, as one server had the old entry and the others got the new entry. I've seen similar with Googles public DNS, although in that case it was rotated across a larger number of servers.
Tim
P.S. I'm also willing to bet that unless you are in Birmingham, that I get the correct resolution for your site using Virgin's DNS. Want to take me up on that?
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