IP Address: 125.139.87.30

Threat level: 64%

Attack count: 429

Country: South Korea

Region: Jeollabuk-do

City: Jeonju

ASN: 4766

ISP: Korea Telecom

Net Block: 125.139.17.0-125.142.120.255

Domain name: kt.com

Abuse contact: [email protected]

Stats (UTC)

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

Discuss this ip address

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Recent submissions

Reported by

Timestamp

Notes

Flags

System

✅ Chris

2 months ago

ipban 2.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Tesi Supporto

2 months ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Gordon

2 months ago

ipban 2.0.0

BruteForce

SMTP

✅ Chris

2 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

2 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

2 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

2 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Gordon

2 months ago

ipban 2.0.0

BruteForce

SMTP

✅ Arvoreen

2 months ago

fail2ban

BruteForce

postfix

✅ Chris

2 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

2 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Anonymous

2 months ago

Real-time Intercept: SMTP attack. Reference: 2026-06-05 23:27:19.2550 Login failure: 125.139.87.30 SMTP

BruteForce, Hacking

SMTP

✅ Gordon

2 months ago

ipban 2.0.0

BruteForce

SMTP

✅ Tesi Supporto

2 months ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Chris

2 months ago

ipban 2.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Craig

2 months ago

ipban 2.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Pedro Johansson

2 months ago

ipbanpro 5.0.0

BruteForce

IceWarp

✅ Chris

2 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Pedro Johansson

2 months ago

ipbanpro 5.0.0

BruteForce

IceWarp

✅ Anonymous

2 months ago

Real-time Intercept: SMTP attack. Reference: 2026-05-30 15:41:29.8499|WARN|Login failure: 125.139.87.30, , SMTP, 1,

BruteForce

SMTP

✅ Anonymous

2 months ago

Real-time Intercept: SMTP attack. Reference: 2026-05-29 19:37:41.2627 Login failure: 125.139.87.30 SMTP

BruteForce

SMTP

✅ Tesi Supporto

3 months ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Chris

3 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Pedro Johansson

3 months ago

ipbanpro 5.0.0

BruteForce

IceWarp

✅ Arvoreen

3 months ago

fail2ban

BruteForce

postfix

✅ Chris

3 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

3 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Anonymous

3 months ago

Real-time Intercept: SMTP attack. Reference: 2026-05-22 13:41:35.1375 Login failure: 125.139.87.30 SMTP

BruteForce

SMTP

✅ Anonymous

3 months ago

Real-time Intercept: SMTP attack. Reference: 2026-05-21 05:30:07.8923 Login failure: 125.139.87.30 SMTP

BruteForce

SMTP

✅ Arvoreen

3 months ago

fail2ban

BruteForce

postfix

✅ Anonymous

3 months ago

Real-time Intercept: SMTP attack. Reference: 2026-05-20 07:53:00.6288 Login failure: 125.139.87.30 SMTP

BruteForce

SMTP

✅ Anonymous

3 months ago

Real-time Intercept: SMTP attack. Reference: 2026-05-19 06:28:05.1078 Login failure: 125.139.87.30 SMTP

BruteForce

SMTP

✅ Craig

3 months ago

ipban 2.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Tim Walker

3 months ago

ipban 1.8.0 - LogonDenied

BruteForce

MSExchangeLogs

✅ tuya

3 months ago

ipban 1.9.0 - Authentication failed

BruteForce

SmarterMail

✅ Tesi Supporto

3 months ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Chris

3 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Anonymous

3 months ago

SMTP attack detected. 2026-05-15 07:25:34.1778 Login failure: 125.139.87.30 SMTP

BruteForce

SMTP

✅ Arvoreen

3 months ago

fail2ban

BruteForce

postfix

✅ Gordon

3 months ago

ipban 2.0.0

BruteForce

SMTP

✅ Anonymous

3 months ago

SMTP attack detected. 2026-05-12 21:56:09.2542 Login failure: 125.139.87.30 SMTP

BruteForce

SMTP

✅ Anonymous

3 months ago

SMTP attack detected. 2026-05-11 02:29:04.8808 Login failure: 125.139.87.30 SMTP

BruteForce

SMTP

✅ Anonymous

3 months ago

SMTP attack detected. 2026-05-10 01:41:28.9741 Login failure: 125.139.87.30 SMTP

BruteForce

SMTP

✅ Tesi Supporto

3 months ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Tim Walker

3 months ago

ipban 1.8.0 - LogonDenied

BruteForce

MSExchangeLogs

✅ Chris

3 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Arvoreen

3 months ago

fail2ban

BruteForce

postfix

✅ Gordon

3 months ago

ipban 2.0.0

BruteForce

SMTP

✅ Craig

3 months ago

ipban 2.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

3 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Tesi Supporto

3 months ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Chris

4 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Anonymous

4 months ago

ipbanpro 5.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

4 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

4 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

4 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Gordon

4 months ago

ipban 2.0.0

BruteForce

SMTP

✅ Arvoreen

4 months ago

fail2ban

BruteForce

postfix

✅ Gordon

4 months ago

ipban 2.0.0

BruteForce

SMTP

✅ tuya

4 months ago

ipban 1.9.0 - Authentication failed

BruteForce

SmarterMail

✅ Craig

4 months ago

ipban 2.0.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Tesi Supporto

4 months ago

fail2ban

BruteForce

tesi_postfix-auth

✅ Chris

4 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Chris

4 months ago

ipban 3.1.0 - Invalid Username or Password

BruteForce

MailEnable

✅ Arvoreen

4 months ago

fail2ban

BruteForce

postfix