As a follow-up of @user24582 correct answer:


The C-Visa issued for Austria was issued by France:

- [France][0] 
   - **Austria**, Belgium, Czech Republic, Estonia, Germany, Greece, Iceland, Italy, Luxembourg, Portugal, Slovenia and Spain
- [Switzerland][1]
   - Hungry, Netherlands, Norway, Poland and Sweden
- **Unknown**
  - Denmark, Finland, Latvia, Lithuania, Malta, Slovakia

**Other sources**:

- [List of diplomatic missions in Madagascar][10] 
- [Annex 22 1 National entries in the "comments" section of the visa sticker][105] 
   - with a list of **country** specific codes/remarks

[0]:https://mg.ambafrance.org/Informations-sur-les-visas-2160
[1]:https://www.eda.admin.ch/countries/madagascar/en/home/visa/entry-ch/up-90-days/where-to-apply-schengen.html
[10]:https://en.wikipedia.org/wiki/List_of_diplomatic_missions_in_Madagascar
[105]:http://ec.europa.eu/dgs/home-affairs/e-library/documents/policies/borders-and-visas/visa-policy/docs/visa_sticker_comments_section_en.pdf