121.157.181.162
Recent Activity
This IP has received recent abuse reports, which causes the score to increase.
- ISP
- Korea Telecom
- Usage Type
- Fixed Line ISP
- ASN
- AS4766
- Domain Name
- kt.com
- Country
- 🇰🇷 Korea (the Republic of)
- City
- Seongnam-si, Gyeonggi-do
Abuse Reports
Total reports
162 from
111 distinct
reporters
First reported
Most recent report
Recent reports
We have received reports of abusive activity from this IP address within the last week. It is
potentially still actively engaged in abusive activities.
| Reporter | IoA Timestamp (UTC) | Comment | Categories |
|---|---|---|---|
| 🇺🇸 MSchienle |
Nov 10 11:18:42 customvisuals postfix/smtpd[25611]: warning: unknown[121.157.181.162]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
|
Email Spam | |
| 🇬🇧 Aetherweb Ark |
121.157.181.162 (KR/South Korea/-), N distributed smtpauth attacks on account in the last X secs
|
Brute-Force | |
| Anonymous |
Failed login attempt detected by Fail2Ban in plesk-postfix jail
|
Brute-Force | |
| 🇺🇸 entangled_mongoose |
Failed IMAP authentication with username 'user_sha_fd684@domain_sha_023c5'.
|
Brute-Force Hacking | |
| 🇨🇦 polycoda |
📮 Sends email spam and/or tries to probe for a ton of inexistent email accounts to send spam to and/or tries to brute force its way into an email account
|
Email Spam | |
| 🇳🇿 andkiwi |
Unauthorised attempted login to SUBMISSION server
|
Brute-Force | |
| 🇦🇷 Honorable |
Password spraying contra SMTP AUTH (MailEnable). Cuenta(s) objetivo: [email protected], [email protected]
|
Brute-Force | |
| 🇷🇴 iulianh |
*
|
Brute-Force SSH | |
| 🇫🇷 tecnicorioja |
SASL LOGIN authentication failed Nov 10 08:18:43
|
Brute-Force | |
| 🇩🇪 digico_mt |
|
Port Scan | |
| 🇺🇸 lintelcorpo |
Yesterday, this IP was the source of 8 failed authentications targeting 8 unique usernames on our Mail Server at 216.21.193.119.
|
Brute-Force | |
| 🇫🇷 adlp.org |
|
Brute-Force | |
| 🇮🇩 xveil |
2026-11-10T15:42:50.126499 mail-honeypot postfix/submission/smtpd[24776]: warning: unknown[121.157.181.162]: SASL LOGIN authentication failed: authentication failure
...
|
Brute-Force | |
| 🇩🇪 mattk |
Nov 10 08:13:37 postfix/submission/smtpd[385267]: warning: unknown[121.157.181.162]: SASL LOGIN authentication failed: authentication failure
|
Email Spam Brute-Force | |
| 🇩🇪 Sparxx |
|
Brute-Force |
Think this IP has been falsely reported? You may request to have the associated reports reviewed and removed. Request Takedown