Several 10’s should not be an issue and may be required for sites which for example serve PDFs to very high end eReaders or use things such complex http based video streaming.
# Reject request when more than 5 ranges in the Range: header.
# CVE-2011-3192
#
RewriteEngine on
RewriteCond %{HTTP:range} !(^bytes=[^,]+(,[^,]+){0,89}$|^$) [NC]
RewriteRule .* - [F]
# We always drop Request-Range; as this is a legacy
# dating back to MSIE3 and Netscape 2 and 3.
#
RequestHeader unset Request-Range
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