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AbuseIPDB » 121.199.172.55

121.199.172.55 was found in our database!

This IP was reported 205 times. Confidence of Abuse is 54%: ?

54%

ISP	Aliyun Computing Co., LTD
Usage Type	Data Center/Web Hosting/Transit
ASN	AS37963
Domain Name	alibabacloud.com
Country	🇨🇳 China
City	Hangzhou, Zhejiang

IP info including ISP, Usage Type, and Location provided by IPInfo. Updated weekly.

Report 121.199.172.55

Whois 121.199.172.55

IP Abuse Reports for 121.199.172.55:

This IP address has been reported a total of 205 times from 67 distinct sources. 121.199.172.55 was first reported on March 31st 2025, and the most recent report was 3 hours ago.

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
Anonymous	2026-07-21 05:51:34 (3 hours ago)	Blocked by UFW (UDP on 123) Source port: 38383 TTL: 43 Packet length: 76 56 TOS: 0x14 This report ( ... show more Blocked by UFW (UDP on 123) Source port: 38383 TTL: 43 Packet length: 76 56 TOS: 0x14 This report (for 121.199.172.55) was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan Spoofing
🇺🇸 chronos	2026-07-20 06:53:50 (1 day ago)	[AUTORAVALT][[20/07/2026 - 03:53:50 -03:00 UTC] Attack from [Li Jia] [121.199.172.55]-[RANGE:121.196 ... show more [AUTORAVALT][[20/07/2026 - 03:53:50 -03:00 UTC] Attack from [Li Jia] [121.199.172.55]-[RANGE:121.196.0.0 - 121.199.255.255] Action: BLocKed Phishing -> Phishing websites and/or email. Email Spam -> Spam email content, infected attachments, and phishing emails. Hacking... Unauthorized attempts to access the server. Spoofing -> Email sender spoofing. Brute-Forc] ... show less	Brute-Force Email Spam Spoofing Phishing Hacking
🇺🇸 chronos	2026-07-20 06:19:23 (1 day ago)	[AUTORAVALT][[20/07/2026 - 03:19:22 -03:00 UTC] Attack from [Li Jia] [121.199.172.55]-[RANGE:121.196 ... show more [AUTORAVALT][[20/07/2026 - 03:19:22 -03:00 UTC] Attack from [Li Jia] [121.199.172.55]-[RANGE:121.196.0.0 - 121.199.255.255] Action: BLocKed Phishing -> Phishing websites and/or email. Email Spam -> Spam email content, infected attachments, and phishing emails. Hacking... Unauthorized attempts to access the server. Spoofing -> Email sender spoofing. Brute-Forc] ... show less	Brute-Force Email Spam Spoofing Phishing Hacking
🇩🇪 acadeova	2026-07-18 04:00:46 (3 days ago)	Blocked by UFW on vps2 [8035/tcp] Source port: 47177 TTL: 241 Packet length: 40 TOS: 0x00 This repo ... show more Blocked by UFW on vps2 [8035/tcp] Source port: 47177 TTL: 241 Packet length: 40 TOS: 0x00 This report was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 chronos	2026-07-17 21:04:24 (3 days ago)	[AUTORAVALT][[17/07/2026 - 18:04:24 -03:00 UTC] Attack from [Li Jia] [121.199.172.55]-[RANGE:121.196 ... show more [AUTORAVALT][[17/07/2026 - 18:04:24 -03:00 UTC] Attack from [Li Jia] [121.199.172.55]-[RANGE:121.196.0.0 - 121.199.255.255] Action: BLocKed Phishing -> Phishing websites and/or email. Email Spam -> Spam email content, infected attachments, and phishing emails. Hacking... Unauthorized attempts to access the server. Spoofing -> Email sender spoofing. Brute-Forc] ... show less	Brute-Force Email Spam Spoofing Phishing Hacking
🇮🇳 evicky2002	2026-07-14 10:21:11 (6 days ago)	Confirmed malicious by STILWaters CTI platform (score=100, sources=3)	Hacking Brute-Force SSH
🇫🇷 Fasetech	2026-07-11 10:04:41 (1 week ago)	SecLedge detected suspicious activity. Score: 264.12. Sensor: T-Pot.	Brute-Force
🇮🇳 evicky2002	2026-07-09 06:00:00 (1 week ago)	Confirmed malicious by STILWaters CTI platform (score=100, sources=3)	Hacking Brute-Force SSH
🇯🇵 jay hung	2026-07-07 02:42:23 (2 weeks ago)	2026-07-07T02:42:22.480417+00:00 quarktech kernel: [2036800.571925] [UFW BLOCK] IN=eth0 OUT= MAC=22: ... show more 2026-07-07T02:42:22.480417+00:00 quarktech kernel: [2036800.571925] [UFW BLOCK] IN=eth0 OUT= MAC=22:00:92:2e:84:93:fe:ff:ff:ff:ff:ff:08:00 SRC=121.199.172.55 DST=172.237.20.248 LEN=40 TOS=0x00 PREC=0x40 TTL=227 ID=65089 PROTO=TCP SPT=52141 DPT=18600 WINDOW=1024 RES=0x00 SYN URGP=0 ... show less	Port Scan
🇳🇱 SysAdmin Dylan	2026-07-06 04:26:20 (2 weeks ago)	Port Scan detected from 121.199.172.55 (CN/China/-). 11 hits in the last 291 seconds	Brute-Force
🇩🇪 chris_yooo	2026-06-26 01:31:43 (3 weeks ago)	Jun 26 03:30:44 isp postfix/submission/smtpd[3715210]: lost connection after CONNECT from unknown[12 ... show more Jun 26 03:30:44 isp postfix/submission/smtpd[3715210]: lost connection after CONNECT from unknown[121.199.172.55] Jun 26 03:31:18 isp postfix/submission/smtpd[3715210]: lost connection after CONNECT from unknown[121.199.172.55] Jun 26 03:31:42 isp postfix/submission/smtpd[3715210]: lost connection after STARTTLS from unknown[121.199.172.55] ... show less	Spoofing Brute-Force
🇫🇷 Fasetech	2026-06-25 10:12:57 (3 weeks ago)	SecLedge detected suspicious activity. Score: 264.12. Sensor: T-Pot.	Brute-Force
🇫🇷 Fasetech	2026-06-22 08:10:14 (4 weeks ago)	SecLedge detected suspicious activity. Score: 264.12. Sensor: T-Pot.	Brute-Force
🇫🇷 Fasetech	2026-06-19 12:47:25 (1 month ago)	SecLedge detected suspicious activity. Score: 264.12. Sensor: T-Pot.	Brute-Force
🇫🇷 Petre 21_ip	2026-06-07 08:49:29 (1 month ago)	2026-06-07T10:49:28.832112+02:00 vmi2775508 kernel: [UFW BLOCK] IN=eth0 OUT= MAC=00:50:56:5c:a7:cf:c ... show more 2026-06-07T10:49:28.832112+02:00 vmi2775508 kernel: [UFW BLOCK] IN=eth0 OUT= MAC=00:50:56:5c:a7:cf:c0:69:11:b3:85:db:08:00 SRC=121.199.172.55 DST=155.133.26.57 LEN=40 TOS=0x00 PREC=0x00 TTL=231 ID=50106 PROTO=TCP SPT=42167 DPT=63322 WINDOW=1024 RES=0x00 SYN URGP=0 ... show less	Port Scan

Showing 1 to 15 of 205 reports

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