Some isp (tm & jaring) were having issue with their international link. My office is using jaring and we experienced difficulty accessing websites hosted overseas yesterday around 10am. I'm using unifi and experienced the same thing, called unifi customer service and they announced about this issue too.

Official announcement from jaring (couldn't find announcement from TM)
https://www.jaring.my/custservices/whatnew/...=SEP&tahun=2014