No, they aren't:
Indirect addresses 00-FF address RAM;
Direct addresses 00-7F address RAM (also indirectly addressable);
Direct addresses 80-FF address SFRs (not indirectly addressable).

There is a single 256-byte RAM area - all of it is indirectly addressable, but only the 1st half of it is directly addressable.

There is a separate 128-byte SFR area.

As I said before, See fig 6 in the 80C51 Family Architecture document:
http://www.semiconductors.philips.com/acrobat/v...ARCH_1.pdf
See how the SFR area is shown as disjoint from the contiguous RAM area.