121.158.171.51
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
- Wonju, Gangwon-do
No reports in the last 60 days
121.158.171.51 has been reported 42 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
42 from
20 distinct
reporters
First reported
Most recent report
| Reporter | IoA Timestamp (UTC) | Comment | Categories |
|---|---|---|---|
| 🇹🇷 rtbh.com.tr |
list.rtbh.com.tr report: tcp/23
|
Brute-Force | |
| 🇩🇪 Grizzlytools |
Kingcopy(AI-IDS)RouterOS: Portscanner detected.
|
Port Scan | |
| 🇺🇸 RAP |
2025-11-09 22:34:33 UTC Unauthorized activity to TCP port 23. Telnet
|
Port Scan | |
| 🇹🇷 rtbh.com.tr |
list.rtbh.com.tr report: tcp/23
|
Brute-Force | |
| 🇺🇸 MPL |
tcp/23
|
Port Scan | |
| 🇩🇪 Schnuffi |
ports, 23/24H:1/7D:1
|
Port Scan | |
| 🇩🇪 Lazentis |
Unauthorized access attempt to port 23 (tcp)
|
Brute-Force SSH | |
| 🇳🇱 bontekoe.technology |
121.158.171.51 banned on rtr - Threshold reached: 5 failures
|
SSH | |
| 🇺🇸 drewf.ink |
[09:52] Attempted telnet login on port 23 with username root
|
Brute-Force Exploited Host | |
| 🇧🇾 sashan |
2025-11-07T09:35:59.927985+03:00 gate kernel: [511545.738513] nftables: JAIL-TELNET IN=wan OUT= MAC= SRC=121.158.171.51 DST=xxx.xxx.xxx.xxx LEN=40 TOS=0x00 PREC=0x00 TTL=50 ID=53252 PROTO=TCP SPT=28682 DPT=23 WINDOW=23842 RES=0x00 SYN URGP=0
...
|
Port Scan | |
| 🇫🇷 security.rdmc.fr |
Port Scan Attack proto:TCP src:28682 dst:23
|
Port Scan | |
| 🇩🇪 KPS |
PortscanN
|
Port Scan | |
| 🇺🇸 xmission.com |
Blocked by UFW (TCP on 23)
Source port: 28682
TTL: 53
Packet length: 40
TOS: 0x00
This report (for 121.158.171.51) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
|
Port Scan Hacking Brute-Force | |
| 🇦🇺 PetePK |
Probed 1 time(s): TCP/23
|
Port Scan | |
| 🇨🇳 ThreatBook.io |
ThreatBook Intelligence: http_proxy more details on http://threatbook.io/ip/121.158.171.51
|
SSH |
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