To split VCF into multiple files , try
CubexSoft vCard Splitter. Because it allows bulk file uploads, it makes it possible to split VCF files into multiple files in a batch without any errors. All versions of the Windows operating system, including Windows 10, Windows 11, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, and others, can run this application. It is the most straightforward mechanism that requires no technical expertise to operate. Users can start a free demo that allows them to split VCF files into multiple files.