I have also been receiving calls from numbers startingwith 0436 252 XXX - I have only answered one and it hung up. It's a little creepy ... lots of weird stuff going on with calls these days.

Been receiving a lot of calls from numbers that appear to be related. 0436 252 ... . Some have obscene photos come up when you put the number into the search engine. Calls come at some rather odd times ( after business hours).