Searched for https://atom.archives.unesco.org/informationobject/browse?sort=relevance&creators=564&sf_culture=en 
Note: This calendar view maps the number of captures of https://atom.archives.unesco.org/informationobject/browse?sort=relevance&creators=564&sf_culture=en, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.