Ionicons hex icons codes

Don’t know if this is the place for this question. I’m using Iconicons in a web app independently of the ionic framework. To display the icons I’m using icons hex codes. In the past I looked in the page source of ionicons to find out each icon’s hex code, but now instead of the icon it shows a square (as a font that the browser cannot read). How can I find the hex code for each icon again?