TimThumb Error

The following error(s) occurred:

• Error reading the URL you specified from remote host.Could not resolve host: scontent-frt3-2.cdninstagram.com

Query String: src=https%3A%2F%2Fscontent-frt3-2.cdninstagram.com%2Fvp%2F430d4fa611f2c7b0b81b9972b5554582%2F5D4B6CBA%2Ft51.2885-15%2Fe35%2F56350850_573192766516520_173668171593270556_n.jpg%3F_nc_ht%3Dscontent-frt3-2.cdninstagram.com&w=90&h=64&zc=1
TimThumb version: 2.8.14
Instruction: Thumbnails don't work — what to do? (registration required)