113.87.131.177

Recent Activity This IP has received recent abuse reports, which causes the score to increase.
Abuse Confidence Score
100% Critical
29 reports
27 reporters · latest 4 seconds ago
ISP
CHINANET Guangdong province network
Usage Type
Fixed Line ISP
ASN
AS4134
Domain Name
chinatelecom.cn
Country
🇨🇳 China
City
Bao'an, Guangdong
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Abuse Reports

Total reports
29 from 27 distinct reporters
First reported
Most recent report
Last 60 days
Top reporter locations 🇩🇪 Germany 6 🇮🇹 Italy 4 🇫🇷 France 2
Most common categories Brute-Force 23 Port Scan 4 SSH 3 Email Spam 3 Hacking 3
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
🇭🇺 Lacika555
RdpGuard detected brute-force attempt on SMTP
Brute-Force
🇬🇧 killian7603
Malicious activity
Email Spam Spoofing Brute-Force
🇧🇾 lns.bz
SSH bruteforce [BY]
SSH
🇹🇭 thaizone.com
Mail credential brute-force attack (SM3) #1
Email Spam Brute-Force
🇩🇪 ITSNF
Blocked by os-abuseipdb; 5 hits, proto=tcp, ports=22
Port Scan Hacking
🇫🇷 UM3
Exim Auth Failed
Brute-Force
🇩🇪 DocNetzwerk
(smtpauth) Failed SMTP AUTH login from 113.87.131.177 (CN/China/-)
Brute-Force
🇧🇬 sanitariu
Nov 15 02:14:50 dri postfix/smtpd[1735264]: warning: unknown[113.87.131.177]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=nasko ...
Brute-Force
🇵🇱 ZiBoTo
Nov 15 00:46:51 lawenda postfix/smtpd[26589]: warning: unknown[113.87.131.177]: SASL PLAIN authentication failed: (reason unavailable), [email protected] ...
Brute-Force
🇮🇹 Inartis
2026-11-15T01:24:25.809679+02:00 mail.inartis.it postfix/smtpd[2890798]: warning: unknown[113.87.131.177]: SASL LOGIN authentication failed: authentication failure, [email protected] ...
Port Scan Brute-Force
🇪🇸 didevi
SPAM or Brute force attack detected
Email Spam Brute-Force
🇫🇷 tecnicorioja
SASL LOGIN authentication failed Nov 14 22:59:59
Brute-Force
🇩🇪 LRob
SMTP AUTH probe | 2026-11-14 22:39 UTC
Port Scan
🇮🇹 CoreTech srl
Brute-Force
🇺🇸 entangled_mongoose
Failed IMAP authentication with username 'user_sha_29fff@domain_sha_023c5'.
Brute-Force Hacking

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