What is this ad network?

Anyone know what is the ad network of this script?


<script id="load_ad_400467">
(function() {
var _script = document.createElement('script');
_script.type = 'text/javascript';
_script.async = true;
_script.id = 'init_ad_400467';
_script.src = 'http://20d625b48e.se/?placement=400467&async';
_script.onload = _script.onreadystatechange = function() {
var rs = this.readyState;
if(this.readyState && this.readyState != 'complete' && this.readyState != 'loaded')
return;
if(typeof load_ad_400467 == 'function')
load_ad_400467(_script);
};
var _s = document.getElementsByTagName('script')[0];
_s.parentNode.insertBefore(_script, _s)
})();
</script>