Several websites stopped working at around 10:00 AM today through my 5G Home Broadband

[Luigi]

Access to several websites, including dropbox.com, stopped working in the morning today. I've restarted my 5G Home Broadband router but that didn't help. I can access the affected websites over my mobile connection with a different provider.

[pfalkingham]

As far as I can tell, it's DNS capture by three. 

Three seems to be intercepting DNS traffic on port 53, even if you set custom DNS. Unless you’re using DNS-over-HTTPS or a VPN, your queries are still going through Three’s resolvers. Try running nslookup github.com If the “Server” line shows something like 94.197.33.33 or 2a04:…, that’s Three’s DNS.

If you force nslookup github.com 8.8.8.8, it’ll probably work, which proves the intercept:

PS C:\Users\pfalk> nslookup github.com
Server: UnKnown
Address: 2a04:4a45:9:b:188:31:250:128

*** UnKnown can't find github.com: No response from server

PS C:\Users\pfalk> nslookup github.com 8.8.8.8
Server: dns.google
Address: 8.8.8.8

Non-authoritative answer:
Name: github.com
Address: 20.26.156.215

[nelnelhk]

It happens to me too! I can fix it my using VPN app ... Sounds so strange

[Wwwally]

Me too. Dropbox will not sync. Scanner stopped working to email. wigle.net and pgdp.net sites are inaccessible (just timeout). First detected late morning Friday 10/10/25

Reboot does not solve. Most webpages and apps are working fine, Just a select few not.

I'm using a Three home broadband 4G SIM.

[Longwater]

Seems to have started happening for multiple people around the same time, suggesting something systemic.

https://www.reddit.com/r/ThreeUK/comments/1o3axvw/anyone_else_with_massive_dns_issues_today_home/

[Longwater]

This exact same thing just started happening to me around that time Friday Friday morning with 3 Home Broadband. Some websites are loading just fine, others randomly will not connect at all that normally do without issue, though if I VPN I can connect to them fine again. Also having issues with connected devices, e.g. Amazon Firestick not being able to connect all day.

[Luigi]

This occasionally happens on the same day of the month I subscribed, as if a configuration was not correctly carried forward. I used the web chat for assistance and the issue was not resolved after yet another router restart, at which point the chat service was also not available until next morning:

Agent: I would request you to please restart the hub once.

You: If I restart the hub, this connection will drop. Is that okay?

Agent: Yes no problem.

Agent: Once you restart the hub, you will be able to access the services

You: Will I need an SMS with a link to rejoin after I restart the hub?

Agent: Yes I will sent it to your notification number

You: Thank you. As soon as I get the link I will restart the hub.

Agent: Once you restart the hub and if the chat drop then I will be able to sent you that link

Agent: Do not worry you can restart the hub now and once done check your services.

You: Okay. Restarting now.

Agent: Thank you

Agent: It looks like we’ve been disconnected, so I will close the chat. You can use the same link to chat again at a more convenient time. Our chat support is available from 9am-8pm on weekdays and from 9am-6pm on weekends.