My web browsers all change my URL

I am trying to run my drupal server on localhost.
But when I put “localhost/xisam” into the URL, I am immediately redirected to isam.org! This happens on Chrome, Chromium, and Opera.
Localhost/xisam/index.php gets similarly redirected .
I changed my directory from xisam to xi, and get the same result. What is happening?

Web browsers sometimes treat that as a web search.

Have you tried the full url

http://localhost/xisam

There was a redirect in my .htaccess file. But for sure I did not put it there!