PlusNet Protect: Facebook profile images

[#1]

Hi there,
I've just activated PlusNet SafeGuard and its working just as expected:
- I have blocked all social media (and most other unwanted stuff)
- But whitelisted Twitter and Facebook
Images and Profile images are not loading in Facebook; I have found that adding fbcdn.net fixes the timeline photos; but I can't see profile images.
Does anyone know which TLD hosts the profile images so I can fix this?
Thanks

[#2]

Hey,
Facebook uses a separate managed CDN service for their EU profile image hosting:
fbcdn-profile-a.akamaihd.net
-C

[#3]

Thank you, I added akamaihd.net to the SafeGuard Whitelist and this has got the images working immediately.
Many, many thanks!