shell:$ nslookup -timeout=2 -retry=1 'a.config.skype.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
a.config.skype.net	canonical name = skypeecs-int-c2s.trafficmanager.net.
skypeecs-int-c2s.trafficmanager.net	canonical name = dual-s-0005.config.skype.net.
dual-s-0005.config.skype.net	canonical name = config-edge-skype-net.s-0005.dual-s-msedge.net.
config-edge-skype-net.s-0005.dual-s-msedge.net	canonical name = s-0005.dual-s-msedge.net.
Name:	s-0005.dual-s-msedge.net
Address: 52.123.128.14
Name:	s-0005.dual-s-msedge.net
Address: 52.123.129.14
Name:	s-0005.dual-s-msedge.net
Address: 2603:1063:27:1::14
Name:	s-0005.dual-s-msedge.net
Address: 2603:1063:27:2::14