DNS hijacking is silly. I already took over different .gov and .edu domains in the past, but I just immediately reported that and moved on. This one is a little different though, it's about how I took over phone-network infrastructure domains ( e164.arpa ) of entire territories, and accidentally logged hundreds of thousands of phone calls to military bases. But let's start at the beginning. What is e164.arpa anyway? ENUM ( e164.arpa ) was an idea from the early 2000s 1 : take a phone number, reverse the digits, put dots between them, and add .e164.arpa at the end, so +49 30 123456 becomes something like 6.5.4.3.2.1.0.3.9.4.e164.arpa . You can see that every German number will end up under .9.4.e164.arpa , which is the zone for all +49 numbers, and that zone is controlled by DENIC (the same organization that runs .de ).…