A Novel IM Sync Message-Based Cross-Device Tracking

Table 2

Domain names of gate servers.

Application	Device type	Domain names
QQ	PC
	Mobile phone
WeChat	PC	long.weixin.qq.com
	Mobile phone
Skype	PC	(i) ip.wusmw1-client-s.msnmessenger.msn.com.akadns.net
	Mobile phone	(ii) ip.ea2hk2-client-s.msnmessenger.msn.com.akadns.net
WhatsApp	PC	mmx-ds.cdn.whatsapp.net
	Mobile phone	(i) chat.cdn.whatsapp.net
		(ii) Whatsapp-chatd-edge-shv-02-hkg3.facebook.com
Facebook Messenger	PC (web)	star.c10r.facebook.com
	Mobile phone	(i) mqtt.c10r.facebook.com
		(ii) edge-mqtt-mini-shv-02-hkg3.facebook.com