There seems to be about 10 years of this being reported, yet not very good answers.
Hopefully someone reading this has a good answer.
Southwest.com website from home and my office works fine and shows an IP of 220.127.116.11(Comcast Cable).
However from a clients office they can not access the site and the IP there is shown as 18.104.22.168 (Sprint T-1).
Searched the web the only thing someone reports as working does not work for many people and that was a netsh interface set tcp command.
Tracert, nslookup and ping all show the IP address as defined.
So aside from trying to convince Sprint they have a problem, with 1 website in the internet, any ideas how to get around this?
I tried hard coding the IP in the host file with no luck.
IPconfig /flushdns /register done, cleared cache of browser, tried all 3 browsers.
Any ideas or better Google searches than I are appreciated.