IP Address: 59.66.17.203

Threat level: 38%

Attack count: 71

Country: China

ASN: 4538

ISP: China Education and Research Network Center

Net Block: 59.64.0.0-59.79.255.255

Domain name: cernet.edu.cn

Abuse contact: [email protected]

Stats (UTC)

Last 60 Minutes
Last 24 Hours
Last 30 days
Last 12 months

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Recent submissions

Reported by

Timestamp

Notes

Flags

System

✅ Craig

an hour ago

ipban 2.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

2 days ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Tim Walker

2 days ago

ipban 1.8.0 - LogonDenied

BruteForce

MSExchangeLogs

✅ Tesi Supporto

2 days ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Gordon

3 days ago

ipban 2.0.0

BruteForce

SMTP

✅ Anonymous

3 days ago

ipbanpro 5.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Tim Walker

3 days ago

ipban 1.8.0 - LogonDenied

BruteForce

MSExchangeLogs

✅ Gordon

10 days ago

ipban 2.0.0

BruteForce

SMTP

✅ Tesi Supporto

10 days ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Chris

11 days ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

12 days ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Tim Walker

13 days ago

ipban 1.8.0 - LogonDenied

BruteForce

MSExchangeLogs

✅ tuya

14 days ago

ipban 1.9.0 - Authentication failed

BruteForce

SmarterMail

✅ Anonymous

14 days ago

Real-time Intercept: SMTP attack. Reference: 2026-06-23 22:49:50.0484 Login failure: 59.66.17.203 SMTP

BruteForce, Hacking

SMTP

✅ Chris

14 days ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Craig

14 days ago

ipban 2.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Arvoreen

16 days ago

fail2ban

BruteForce

postfix

✅ Chris

16 days ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Gordon

16 days ago

ipban 2.0.0

BruteForce

SMTP

✅ Anonymous

16 days ago

Real-time Intercept: SMTP attack. Reference: 2026-06-21 12:40:21.0255 Login failure: 59.66.17.203 SMTP

BruteForce, Hacking

SMTP

✅ Tim Walker

17 days ago

ipban 1.8.0 - LogonDenied

BruteForce

MSExchangeLogs

✅ Arvoreen

17 days ago

fail2ban

BruteForce

postfix

✅ Chris

18 days ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

18 days ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Tesi Supporto

18 days ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Tim Walker

21 days ago

ipban 1.8.0 - LogonDenied

BruteForce

MSExchangeLogs