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by technick 692 days ago
I worked for SITA ( https://en.wikipedia.org/wiki/SITA_(business_services_compan... )back in the late 2000's. They had a massive X25 serial network connecting airlines across the globe. Some of its customers were still running Windows 3.11 in the data center on old AT system. We would buy old computers on craigslist and ebay to keep hardware around for when it failed. I wouldn't be surprised if those systems are still in use today.