The reason the .gov.pk domains resolve into the US is fairly simple...
Their government domains[1] are controlled by Prolexic[2] a lesser known brother of CloudFlare; they're a DDoS protection service.
[1] http://whois.arin.net/rest/nets;q=72.52.12.175?showDetails=t...
[2]http://www.prolexic.com/
