211.236.75.21
Neutral Activity
There is no recent abuse activity, or the IP address is whitelisted.
- ISP
- Korea Telecom
- Usage Type
- Fixed Line ISP
- ASN
- AS4766
- Domain Name
- kt.com
- Country
- 🇰🇷 Korea (the Republic of)
- City
- Incheon, Incheon
No reports in the last 60 days
211.236.75.21 has been reported 121 times. The most recent report is from .
The full history is preserved below and remains searchable. A 0% score reflects the absence of recent activity, but this is not a guarantee that earlier reports were invalid. Abuse confidence score decays, naturally, over time, when the abusive activity stops.
Abuse Reports
Total reports
121 from
49 distinct
reporters
First reported
Most recent report
| Reporter | IoA Timestamp (UTC) | Comment | Categories |
|---|---|---|---|
| 🇫🇷 Pythagus |
Aggressive web scan
|
SQL Injection Bad Web Bot Web App Attack | |
| 🇹🇷 rtbh.com.tr |
list.rtbh.com.tr report: tcp/23
|
Brute-Force | |
| 🇺🇸 SuperCores Hosting |
[2025-09-03 07:50:29.126282] TELNET/23 Unautorized connection, Suspicious Mirai Botnet.
|
DDoS Attack Port Scan Hacking Brute-Force IoT Targeted | |
| 🇺🇸 BSG Webmaster |
Port scanning (Port 23)
|
Port Scan Hacking | |
| 🇩🇪 Grizzlytools |
Kingcopy(AI-IDS)RouterOS: Portscanner detected.
|
Port Scan | |
| 🇩🇪 centurion |
Blocked by UFW on dc00 [23/tcp]
Source port: 21529
TTL: 45
Packet length: 40
TOS: 0x00
This report was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
|
Port Scan Hacking Brute-Force | |
| 🇫🇷 security.rdmc.fr |
Port Scan Attack proto:TCP src:21529 dst:23
|
Port Scan | |
| 🇩🇪 Beta |
ports, 23/24H:1/7D:2
|
Port Scan | |
| 🇺🇸 RAP |
2025-09-02 16:55:35 UTC Unauthorized activity to TCP port 23. Telnet
|
Port Scan | |
| 🇹🇷 rtbh.com.tr |
list.rtbh.com.tr report: tcp/23
|
Brute-Force | |
| 🇹🇷 rtbh.com.tr |
list.rtbh.com.tr report: tcp/23
|
Brute-Force | |
| 🇺🇸 RAP |
2025-09-02 11:35:12 UTC Unauthorized activity to TCP port 23. Telnet
|
Port Scan | |
| 🇺🇸 MPL |
tcp/23
|
Port Scan | |
| 🇺🇸 MPL |
tcp/23 (2 or more attempts)
|
Port Scan | |
| 🇩🇪 ps-center |
CAS-W: TCP-Scanner. Port: 23
|
Port Scan |
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