Just for fun I was playing around with this earlier when the first post was made

I can go to united.com and ual.com through the browser.

I can not go to it via the IP address, I get an Http/1.1 Service Unavailable message

I can not ping or tracert ual.com, united.com or the ip address. It resolves for ual and united.com, but the packets time out on the path. It's been doing that all day from this machine.

I can get to the website from the blackberry browser though by just the ip address.

So there be something weird out there along the way, I should not have issues going by IP and it should tracert and ping it fine. It may not be you