Oxidizing and reducing regions of Bunsen burner flame

[Chap]

Which part of the Buunsen burner flame is oxidizing?

 

According to wiki.answers and my university course book, it is the 'Inner cone':

 

 

http://wiki.answers.com/Q/Oxidizing_zone_in_the_Bunsen_burner_flame

 

 

 

but according to the following websites/files, it is the outer cone:

 

http://eso.vscht.cz/cache_data/1061/www.vscht.cz/ach/pub/LAChI-manual.pdf

 

http://chemistry.about.com/library/weekly/aa010102a.htm

 

 

This is not homework, I'm studying for my finals and this got me confused.