https://raw.githubusercontent.com/ckl/block-lists/master/skype-ads.txt

Domains that did not resolve;

a.ads2.msads.net
adnexus.net
aka-cdn-ns.adtech.de
b.ads2.msads.net
bs.serving-sys.com
cdn.atdmt.com
db3aqu.atdmt.com
ec.atdmt.com
msntest.serving-sys.com
rad.msn.com
so.2mdn.net