ABUSE.MOM
THREAT REPORT

IP Threat Report
45.156.129.161

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-30 08:39:56
First seen: 2026-03-24 13:00:05
Last seen: 2026-03-27 21:00:05
110

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 110/100. Total malicious requests observed: 2.

DANGER_PATHREFERER
01

Geolocation & Classification

IP Address
45.156.129.161
Type
Residential
Country
🇺🇸 United States
City
Chicago
ISP
NSEC - Sistemas Informaticos, S.A.
Organization
Inap CHI
Autonomous System
AS211680 NSEC - Sistemas Informaticos, S.A.
Hit Count
2
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger strong hits: 4High-risk paths: shells, RCE vectors, exploits+100
Foreign referer seenReferer from unrelated external domain+10
Danger strong hits: 2High-risk paths: shells, RCE vectors, exploits+50
Σ = 160
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

2026-03-24 13:00:05
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger strong hits: 4 (+100), Foreign referer seen (+10), Danger strong hits: 2 (+50)
2026-03-27 21:00:05
Last malicious request observed
Total score reached: 110/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

NSEC - Sistemas Informaticos, S.A.
AS211680 · 🇺🇸 United States
06

Recommendations

Actions taken & recommended

  • IP 45.156.129.161 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Other malicious IPs detected in the same /24 subnet — consider blocking 45.156.129.0/24
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

⚙️ General Security

Add 45.156.129.161 to your firewall blocklist. Review logs for successful connections. Enable comprehensive logging on all public-facing services.

07

Neighbors in 45.156.129.0/24

Other blocked IPs from the same /24 subnet — indicates systematic abuse from this network range.

09

Blacklist Status (DNSBL)

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

⛔ LISTED
dnsbl-1.uceprotect.net
✓ Clean
ix.dnsbl.manitu.net
✓ Clean
dnsbl.sorbs.net
✓ Clean
zen.spamhaus.org
✓ Clean
bl.spamcop.net
✓ Clean
b.barracudacentral.org
✓ Clean
truncate.gbudb.net
✓ Clean
psbl.surriel.com

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

10

Threat Analysis

45.156.129.161 has been assigned a threat score of 110/100 (Critical). This places it in the critical threat category. Immediate blocking is strongly advised across all network perimeters.

📊 Threat Analysis

The address 45.156.129.161 originates from Chicago, United States, operating on the network of NSEC - Sistemas Informaticos, S.A.. It was identified through automated analysis of incoming network traffic across monitored endpoints. The address has been active for 3 days in our monitoring system, producing 2 flagged requests at a rate of ~0.7/day. The address is classified as residential, meaning it likely belongs to an end-user ISP connection. Malicious activity from residential IPs typically indicates device compromise or botnet membership. With 43 flagged addresses, United States represents a notable presence in our threat database. A score of 110/100 places this address in the top tier of severity. Block and investigate any historical connections.

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 United States

45.156.129.176 (130)45.156.129.156 (125)45.156.129.116 (120)45.156.129.95 (118)45.156.129.164 (110)View all →

🏢 Same network: AS211680

45.156.128.108 (145)45.156.128.155 (140)45.156.128.176 (130)45.156.129.176 (130)45.156.128.61 (128)View all →
12

Security Intelligence

💡 Credential Stuffing at Scale

Credential stuffing uses stolen username-password pairs from data breaches to attempt logins across many websites. Since users frequently reuse passwords, these automated attacks achieve success rates of 0.1-2%, which translates to thousands of compromised accounts from millions of attempts.

💡 Residential Proxy Networks

Residential proxies route traffic through real home internet connections, making malicious traffic appear to come from legitimate users. Some networks install proxy software bundled with free applications, unknowingly conscripting millions of devices.

🔍 Check Any IP Address

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