Back then it was served from a Sun E4500 running Solaris (7?) and Netscape Enterprise Server. Netscape had been acquired by AOL which had also just bought Time Warner (that's why we moved to their datacentre) but somehow we couldn't make the internal accounting work and still had to buy server licenses.
Fun fact, unlike Apache, NES enabled the HTTP DELETE method out of the box and it had to be disabled in your config. We found that out the hard way when one of the sysadmins ran a vulnerability scanner which deleted all the websites. We were forbidden from running scans again by management.
Another fun fact about NES - they were really pushing server side Javascript as the development language for the web (and mostly losing to mod_perl). Also back in 2001 but at a different place I worked with the person who had just written a book on server side js for O'Reilly - he got his advance but they didn't publish it because by the time he had finished it they considered it a "dead technology".
Our job was basically to maintain an enormous config file for the webserver which was 99% redirects because they would buy every conceivable domain name for a movie which would all redirect to the canonical one. Famously they couldn't get a hold of matrix.com and had to use whatisthematrix.com. Us sysadmins ran our own IRC server and "302" was shorthand for "let's go" - "302 to a meeting". "302" on its own was "lunchtime".
I still mention maintaining this site on my CV and LinkedIn - disappointingly I've never been asked about it in an interview. I suspect most of the people doing the interviewing these days are too young to remember it.