5g home internet - some sites won't load

J-Mac where did you find "DNS settings in System Preferences/Networking to 8.8.8.8 and 8.8.4.4 " when I log onto the Ethernet connection settings I don't see that option.  I feel like the problem is something with the IPv6 as someone else said.  When I turn on my VPN everything loads fine, but if I turn the vpn off nothing will load on Safari, Firefox works which is really odd. 

I can't get discovery plus in the evenings. YouTube load YouTube TV loads but not discovery plus I can get discovery plus in the daytime which doesn't really help me. Any ideas what to do about that? I did have a Netgear box that I used with my former Internet service but I don't need it because the signal strength is excellent. I'm not very tecky and appreciate any advice

I'm having the exact same issues.  The service worked fine for almost a month and then in the past 4-5 days i've been having to reboot the router multiple times per day because of certain websites not loading.  Youtube and netflix will always load, as will google, and yahoo. But my bank website won't connect, and many others.   I've been on the phone with tech support twice for over an hour and keep being told there's an upgrade being done to a tower in my area. I find this highly suspect since so many others are experiencing the exact same quirks in connectivity.  

I have the same issue reported above with various random websites not loading on my 5g iPhone.
 

Yesterday, I went to get a covid test and my iPhone would not load the website to submit my insurance info…

https://dcltesting-2.com

This would not load on multiple browsers and I had no WiFi access.

As soon as I connect to my work VPN, I was able to load this website perfectly fine. Good thing I had a VPN accessible.

Any insight into why these websites are not loading? Is this a UDP issue as mentioned above?

FYI. The website mentioned earlier in this tread does not load for me either via 5g on my iPhone…

http://judiglova.com/

I just got the Gray cylinder and neither of the MacBooks I own would see the internet although they were connected to TMo wifi.  I tried again but used a vpn and they worked like a charm.  This made me very confident the issue was DNS. I changed the DNS settings in System Preferences/Networking to 8.8.8.8 and 8.8.4.4 and the MacBooks worked great even without using VPN.  It was a very simple fix.  What is beyond frustrating is I spent 90 minutes on the phone with TMo support trying to fix this problem and they were absolutely clueless.  Actually, beyond clueless.  All they would do is keep having me reset the device.  I truly find it hard to believe they haven't resolved this issue for other Mac users and documented it for the support folks who have to deal with the public.  C'mon T-Mobile, you're better than this.

I also recently started having issues with this and some sites no longer load when i am connected to the T-Mobile Home Internet.

For example www.bofa.com does not load for me, but www.bankofamercia.com does.

If i switch over to my hotspot through my phone, these pages work. I tried multiple browsers and devices and all work fine through hotspot, but once connected to home internet, specific sites no longer work.

There seems to be some proxy or DNS issue which isn't loading correctly?

Also, i can ping the websites through terminal. They just fail to load in all browsers

You ever figure this out? Having same issues T-Mobile support isn't much help just restarting thing, resetting. No changes. Only had this thing a week then it just starts happening in randomly. I can access google, YouTube, Facebook, but no other sites will load, WiFi or LAN devices. 

Leeb wrote:

My big gray cylinder 5G Home internet has good signal and works reliably. But some percent of websites I visit simply refuse to load via the TMo 5g device, yet they work fine if I use my Verizon cellphone data, or a coaxial cable modem (which I have not canceled service on yet). I am guessing it's either a DNS issue between my Mac and the T-Mobile cylinder (eg: settings requiring technical help or updates), or a problem in the T-Mo network that is blocking some sites. 

After spending too many hours on the phone already with Tmo tech support for 5G Home, I am not excited about the prospect of engaging on the phone again. It takes too long, and the agents need more training and support. 

Has anyone experienced and solved this issue? Do you have technical insights? Is there actual written documentation somewhere that I could access? Gracias. 

(Honestly Tmo, you need to rethink your support infrastructure for 5G Home.)

More likely if its 5G just like the phone, it is not you, its Tmo. They're blocking UDP Access with 5G connections. Try a VPN and see if it works that way. I did that and the sites and access to voice programs like Discord and Skype worked fine after that. T- Mobile lies about their Data or does not give out proper information, Correct me if im wrong T Mobile ? 

Thank you. It's a tough one. I will try this, though it's a bit beyond me. 

You also have me thinking I could try to turn on a VPN and see if that changes anything…

I’ll report back…

And thank you. 

I'm running out of ideas.  The next thing I would do is use the host command from the terminal to confirm your DNS lookups are returning the same IP regardless of that network you're on.  Assuming those are the same, I would also try a traceroute from the terminal to see if you can determine how far your request gets.  The Chrome developer tools could also be useful if you have the Network tab open when you make the request.