AT&T 24.126.0.0

Hi, Can someone confirm that there's some kind of DOS happening on the 24.126.0.0 network? I'm receiving an http request every three minutes (24/7) and it's been going on for about a week now. What is puzzling me is that each request is coming from what appears to be a random address within this same net block. If anyone from AT&T is out there that knows what this is please contact me. Best Regards, Simon -- ###