IP Address: 221.158.140.244

Threat level: 41%

Attack count: 26

Country: South Korea

Region: Sejong-si

City: Sejong

ASN: 4766

ISP: Korea Telecom

Net Block: 221.158.74.0-221.159.209.255

Domain name: kt.com

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

✅ Anonymous

2 days ago

Real-time Intercept: SMTP attack. Reference: 2026-05-21 21:45:40.7183 Login failure: 221.158.140.244 SMTP

BruteForce

SMTP

✅ Arvoreen

2 days ago

fail2ban

BruteForce

postfix

✅ Craig

2 days ago

ipban 2.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Anonymous

2 days ago

Real-time Intercept: SMTP attack. Reference: 2026-05-20 17:22:17.1690 Login failure: 221.158.140.244 SMTP

BruteForce

SMTP

✅ Gordon

3 days ago

ipban 2.0.0

BruteForce

SMTP

✅ tuya

3 days ago

ipban 1.9.0 - Authentication failed

BruteForce

SmarterMail

✅ Tesi Supporto

4 days ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Arvoreen

6 days ago

fail2ban

BruteForce

postfix