Default install, but cannot connect to some websites

[tbone56]

I am having issues with web access.
I reset opnsense to default.
Set WAN interface to DHCP
Set LAN interface to Static

I can ping other computers/devices on the network.

I can open the following websites:
https://crosswordclub.com/
https://speed.cloudflare.com/
https://app.netbird.io/
https://www.google.com/maps

I cannot open the following websites.  The message is "ERR_ADDRESS_UNREACHABLE"

https://pcpartpicker.com/
https://www.speedtest.net
https://www.chase.com
https://www.paypal.com

I had previously configured netbird for my main pc and my server, and opnsense.
I'm not sure if that is the problem because, as I stated, I reset OPNSense back to default, and the netbird connections for the 2 computers are no longer showing in the Netbird > Connecton Status page of OPNSense.

I am very new to OPNSense, and this has me lost.
Why would I have connectivity to some websites?

Thanks.

[pfry]

Offhand I'd guess that your system believes it is dual-stack when it is not. I'd expect IPv6 to be the issue, but a quick look at the listed domains (via nslookup) shows that (at least the first few within) the problem set resolve to IPv4 only (at least from my resolver). Have a look on your side, and check your routing.

[tbone56]

Solved.
It was my fault. 
In my network adapter settings I had 1.1.1.1 in the DNS field.
So, I think I created some kind of lookup issue since OPNSense is doing all of that for the network.

Thanks pfry for the post.