IP Address: 220.71.201.156


Threat level: 93%
Attack count: 26
Country: South Korea
Region: Gwangju
City: Gwangju
ASN: 4766
ISP: Korea Telecom
Net Block: 220.71.76.0-220.72.23.255
Domain name: kt.com
Abuse contact: [email protected]
Stats (UTC)

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Reported by
Timestamp
Notes
Flags
System
ipban 4.1.0 - LogonDenied
BruteForce
MSExchangeLogs
fail2ban
BruteForce
postfix
✅ Anonymous
Real-time Intercept: SMTP attack. Reference: 2026-10-04 19:35:23.4292 Login failure: 220.71.201.156 SMTP 2
BruteForce, Hacking
SMTP
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
ipban 4.1.0 - LogonDenied
BruteForce
MSExchange
✅ Gordon
ipban 2.0.0
BruteForce
SMTP
✅ Chris
ipban 3.1.0 - Invalid Username or Password
BruteForce
MailEnable
✅ Anonymous
ipbanpro 5.0.0 - Invalid Username or Password
BruteForce
MailEnable
fail2ban
BruteForce
tesi_postfix-auth
ipban 4.1.0 - LogonDenied
BruteForce
MSExchange
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