@4runner:
INTERNATIONAL CIVIL AVIATION ORGANIZATION -
RULES OF THE AIR 798
ICAO RULES OF THE AIR -- ANNEX 2
Position Reports
3.6.3.1 Unless exempted by the appropriate ATS authority or by the appropriate air traffic services unit under conditions specified by that authority, a controlled flight shall report to the appropriate air traffic services unit, as soon as possible, the time and level of passing each designated compulsory reporting point, together with any other required information
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The only place exempted right now according to NOTAM is the Nigeria FIR (LAGOS and KANO) execpt when requested. And still people give full position reports. What I conclude out of this people don't read there NOTAMS.
See the ABV incident withe B747.