ABUSE.MOM
THREAT REPORT

IP Threat Report
181.51.188.143

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-10-26 08:51:14
First seen: 2026-10-23 00:58:05
Last seen: 2026-10-25 04:04:24
75

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 75/100. Total malicious requests observed: 69.

DANGER_PATHRATIO_404REFERER
01

Geolocation & Classification

IP Address
181.51.188.143
Type
Residential
Country
🇨🇴 Colombia
City
Pereira
ISP
Telmex Colombia S.A.
Organization
Telmex Colombia S.A.
Autonomous System
AS10620 Telmex Colombia S.A.
Hit Count
69
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Danger strong hits: 2High-risk paths: shells, RCE vectors, exploits+50
Foreign refererReferer from unrelated external domain+10
Σ = 75
03

Observed Activity

Reconstructed HTTP requests from server access logs. Target domains redacted for security.

[redacted]
GET
/
200
Requests shown: 1 · HTTP 404: 0 · Dangerous patterns: 0

* Typical request patterns for detected signatures. Actual target domains are redacted.

04

Timeline

2026-10-23 00:58:05
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio 40-60% (+15), Danger strong hits: 2 (+50), Foreign referer (+10)
2026-10-25 04:04:24
Last malicious request observed
Total score reached: 75/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Telmex Colombia S.A.
AS10620 · 🇨🇴 Colombia

We have detected 22 malicious IPs from this autonomous system.

View all IPs from AS10620 →
06

Recommendations

Actions taken & recommended

  • IP 181.51.188.143 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🔎 Directory Scan Defense

IP 181.51.188.143 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

09

Blacklist Status (DNSBL)

This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.

✓ Clean
bl.blocklist.de
✓ Clean
spam.dnsbl.sorbs.net
✓ Clean
b.barracudacentral.org
✓ Clean
cbl.abuseat.org
✓ Clean
zen.spamhaus.org
✓ Clean
dnsbl.dronebl.org
✓ Clean
psbl.surriel.com

Checked: Spamhaus, SpamCop, Barracuda, SORBS, CBL, UCEProtect. Results may change over time.

10

Threat Analysis

181.51.188.143 has been assigned a threat score of 75/100 (High). This classifies it as a high-severity threat. Proactive blocking is recommended for sensitive infrastructure.

The following attack categories were identified:

Path Enumeration

📊 Threat Analysis

IP address 181.51.188.143 has been traced to Pereira, Colombia, operating on the network of Telmex Colombia S.A.. Our threat detection systems have flagged this address based on observed malicious behavior patterns. Over a period of 2 days, this IP generated 69 malicious requests, averaging approximately 34.5 requests per day. Operating from a residential network, this IP may represent a compromised home gateway or IoT device that has been drafted into a larger attack infrastructure. The IP exhibits directory enumeration behavior, systematically requesting non-existent paths to discover hidden files and misconfigured resources. Our records show 118 malicious IPs originating from Colombia, positioning it as a significant contributor to global threat activity. At 75/100, this IP warrants immediate defensive action.

This IP is classified as residential, suggesting it may belong to a compromised home device, IoT botnet member, or an infected personal computer. Residential IPs involved in attacks often indicate malware infection without the owner's knowledge.

11

Related Threats

🇨🇴 Top threats from Colombia

149.88.111.72 (255)38.156.13.6 (195)191.109.98.73 (193)186.121.12.199 (163)181.51.88.13 (140)View all →

🏢 Same network: AS10620

181.51.88.13 (140)200.118.62.179 (103)181.51.88.4 (103)191.156.18.23 (95)181.55.68.22 (85)View all →
12

Security Intelligence

💡 Cross-Site Scripting (XSS) Attacks

XSS attacks inject malicious scripts into web pages viewed by other users. Reflected XSS uses crafted URLs, while stored XSS persists in databases. Both types can steal session cookies, redirect users, or deface websites.

💡 Threat Intelligence Sharing Frameworks

Standards like STIX/TAXII, MISP, and OpenIOC enable automated sharing of threat intelligence between organizations. Collective defense through shared indicators, tactics, and procedures strengthens the entire security community against common threats.

🔍 Check Any IP Address

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