221.192.237.139 — Shijiazhuang, Hebei, 🇨🇳 China · AS4837 CHINA169-Backbone

A record for

`mail.hbu.cn`
	A	2001:da8:a400:101::23
	A	221.192.237.139

Previously A record for

mail.hbu.edu.cn

mail.xiaoxiaotong.org

mail.cyscc.org

IP numbers used in conjunction

100%	2001:da8:a400:101::23

🛡️Is this IP blacklisted?Check against 50+ spam databases→🌐221.192.0.0/15131K IPs · AS4837 CHINA169-Backbone→🔧AS4837CHINA169-Backbone autonomous system→

Shijiazhuang, Hebei, 🇨🇳 China

^{🇨🇳 CHINA169-Backbone221.192.0.0/15 CMI (Customer Route)}

221.192.237.139 Shijiazhuang, Hebei, 🇨🇳 China Courtesy of