The is not publicly indexed for a reason—it is commercial legacy software. Your safest and fastest path is logging into your DevExpress account and navigating to the archive section.
You can download DevExpress 11.2.11 Universal from the official DevExpress website. Here are the steps:
Before downloading and installing the Devexpress 11.2.11 universal version, ensure that your system meets the following requirements:
If your company owns the license, an administrator can assign it to your email address through the DevExpress License Manager. How to locate the download: Log in to the DevExpress Download Manager.
If the direct EXE download fails, or you only need the DLLs, DevExpress provides older packages via NuGet (though their public feed purges very old versions). You may need to configure a local feed from a backup. However, for 11.2.11, the command line would look like this (historical reference):
: If you are developing for MS Dynamics AX 2012 R2 or R3, use the specialized build labeled v2011.2.111 in the Download Manager. Where to download older versions - DevExpress Support