IP Address: 221.159.239.158


Threat level: 2%
Attack count: 44
Country: South Korea
Region: Seoul
City: Gangnam-gu
ASN: 4766
ISP: Korea Telecom
Net Block: 221.159.211.0-221.161.159.255
Domain name: kt.com
Abuse contact: [email protected]
Stats (UTC)

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Recent submissions


Reported by
Timestamp
Notes
Flags
System
✅ Chris
ipban 4.1.0 - Invalid Username or Password
BruteForce
MailEnable
✅ Chris
ipban 4.1.0 - Invalid Username or Password
BruteForce
MailEnable
ipban 4.1.0 - LogonDenied
BruteForce
MSExchange
ipban 4.1.0 - LogonDenied
BruteForce
MSExchangeLogs
ipban 4.1.0 - LogonDenied
BruteForce
MSExchangeLogs
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
ipban 4.1.0 - LogonDenied
BruteForce
MSExchangeLogs
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
ipban 4.1.0 - LogonDenied
BruteForce
MSExchangeLogs
ipban 4.1.0 - LogonDenied
BruteForce
MSExchangeLogs
ipban 4.1.0 - LogonDenied
BruteForce
MSExchange
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
fail2ban
BruteForce
tesi_postfix-auth
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
✅ Anonymous
ipbanpro 5.0.0 - Invalid Username or Password
BruteForce
MailEnable
ipban 4.1.0 - LogonDenied
BruteForce
MSExchangeLogs
fail2ban
BruteForce
postfix
✅ Anonymous
Real-time Intercept: SMTP attack. Reference: 2026-10-06 11:16:15.5440 Login failure: 221.159.239.158 SMTP
BruteForce, Hacking
SMTP
ipban 4.1.0 - LogonDenied
BruteForce
MSExchangeLogs
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
✅ Anonymous
Real-time Intercept: SMTP attack. Reference: 2026-10-04 10:31:40.5583 Login failure: 221.159.239.158 SMTP
BruteForce, Hacking
SMTP
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
ipban 4.1.0 - LogonDenied
BruteForce
MSExchange
ipban 4.1.0 - LogonDenied
BruteForce
MSExchange
fail2ban
BruteForce
tesi_postfix-auth
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
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