This topic

website unavailable over BT Hub but reachable on BT Mobile

shed53 — Mon, 11 Jan 2021 14:06:11 GMT

I have a BT Smart Hub 2. Today, when I try to connect to alison.com, I get this message :

"
Hmmm… can't reach this page

Check if there is a typo in alison.com.
If spelling is correct, try running Windows Network Diagnostics.
DNS_PROBE_FINISHED_NXDOMAIN
"

This happens from two different browsers on my Windows 10 laptop and when I use my iPhone when it's connected to the hub. However, if I turn off my phone's WiFi, the site comes up just fine on my phone.

Please can anyone suggest what's going on and/or a resolution?

Many thanks in advance.

Chris Woodhouse

Re: website unavailable over BT Hub but reachable on BT Mobile

licquorice — Mon, 11 Jan 2021 14:07:49 GMT

Make sure that parental controls are off and also web protect is disabled.

Re: website unavailable over BT Hub but reachable on BT Mobile

shed53 — Mon, 11 Jan 2021 14:30:23 GMT

Just checked those, but unfortunately, it's made no difference. And the site was accessible over the weekend and I've made no changes to the hub or to my service settings in MyBT since then.

Re: website unavailable over BT Hub but reachable on BT Mobile

licquorice — Mon, 11 Jan 2021 14:33:24 GMT

I can reach the site fine so it isn't a general problem. Are you using a VPN, try turning it off if you are.

Try changing DNS on your device to 8.8.8.8 and 8.8.4.4 (you can't change it on the hub)

Re: website unavailable over BT Hub but reachable on BT Mobile

shed53 — Mon, 11 Jan 2021 14:38:43 GMT

The reason I think it's to do with the hub is that on my phone if I use WiFi I can't reach the site, but if I switch its WiFi off and try the site over 4G, it connects to the site successfully.

Re: website unavailable over BT Hub but reachable on BT Mobile

licquorice — Mon, 11 Jan 2021 15:14:40 GMT

Hence changing the DNS server to Google instead of BT to verify if it is a DNS problem using the addresses served by the hub.

Re: website unavailable over BT Hub but reachable on BT Mobile

shed53 — Mon, 11 Jan 2021 15:20:17 GMT

Ah - thanks. And d'oh!

Tried it and it did work. Thank you.

What does this mean about why/how the problem arose? It was working fine yesterday.

And does this mean I need to do something equivalent for the DNS used on other devices?

Re: website unavailable over BT Hub but reachable on BT Mobile

licquorice — Mon, 11 Jan 2021 15:24:12 GMT

You could try disconnecting the hub from line for half an hour or so to pick up a new IP address and possibly new DNS server addresses.

Re: website unavailable over BT Hub but reachable on BT Mobile

shed53 — Mon, 11 Jan 2021 15:26:28 GMT

OK, thanks. I'll try that late this evening.