CF1759931983205-tsm20251008082644

DNSWHOIS.INFO - smtp.cs.onnet21.com

Search for IP or hostnames:

smtp.cs.onnet21.com checked at 2025-10-08T13:59:43.180Z 1248ms 25/25/25 100% R:12

smtp.cs.onnet21.com

A118.128.208.148🇰🇷 LG Uplus

cs.onnet21.com

MXgw-spam.mailwood.com
A118.128.208.143🇰🇷 LG Uplus

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AI analysis

smtp.cs.onnet21.com points to a single IP address: 118.128.208.148.

Other host names such as smtp.sungshe.co.kr, smtp.pkembassy.or.kr, smtp.susan.onnet21.com, smtp.jangahn.onnet21.com and smtp.kofra.onnet21.com share IP numbers with smtp.cs.onnet21.com.

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
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CIBSXJD CF johedugfp 2025-10-08