ABUSE.MOM
THREAT REPORT

IP Threat Report
156.241.221.83

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-27 16:14:07
First seen: 2026-02-26 02:00:05
Last seen: 2026-02-26 02:00:05
105

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 105/100. Total malicious requests observed: 1.

DANGER_PATHRATIO_404REDIRECT_PROBEREFERER
01

Geolocation & Classification

IP Address
156.241.221.83
Type
Residential
Country
🇺🇸 United States
City
San Francisco
ISP
DynaNode LLC
Organization
DynaNode LLC
Autonomous System
AS400463 DynaNode LLC
Hit Count
1
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger medium hits: 6Medium-risk: admin panels, config files+60
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Probe pattern 302->404 same pathBehavioral anomaly detected by automated analysis+20
Foreign referer seenReferer from unrelated external domain+10
Σ = 105
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

2026-02-26 02:00:05
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger medium hits: 6 (+60), 404 ratio 40-60% (+15), Probe pattern 302->404 same path (+20)
2026-02-26 02:00:05
Last malicious request observed
Total score reached: 105/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

DynaNode LLC
AS400463 · 🇺🇸 United States
06

Recommendations

Actions taken & recommended

  • IP 156.241.221.83 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 156.241.221.83 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

08

Open Ports & Services

Network reconnaissance data from Shodan. Open ports may indicate running services, misconfigurations, or potential attack surfaces.

OPEN PORTS (2)
PortServiceRiskDescription
3128UnknownLowService on port 3128
8080HTTP-AltLowHTTP alternative port — often used for admin panels or proxies
KNOWN VULNERABILITIES (CVE) (21)
CVE IDLink
CVE-2023-46847NVD →
CVE-2024-37894NVD →
CVE-2022-41317NVD →
CVE-2025-59362NVD →
CVE-2024-45802NVD →
CVE-2023-46848NVD →
CVE-2023-46728NVD →
CVE-2023-49288NVD →
CVE-2024-25111NVD →
CVE-2025-62168NVD →
CVE-2021-46784NVD →
CVE-2023-50269NVD →
CVE-2023-5824NVD →
CVE-2023-46846NVD →
CVE-2023-49285NVD →
CVE-2023-46724NVD →
CVE-2022-41318NVD →
CVE-2024-23638NVD →
CVE-2024-25617NVD →
CVE-2025-54574NVD →
CVE-2023-49286NVD →

🔴 This host has 21 known CVEs associated with its exposed services. This volume strongly suggests severely outdated software. Review each CVE in the NVD database.

DETECTED TECHNOLOGIES
squid-cache:squid:5.5

Data source: Shodan InternetDB. Scanned independently of abuse.mom.

09

Blacklist Status (DNSBL)

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

✓ Clean
Spamhaus ZEN

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

10

Threat Analysis

156.241.221.83 has been assigned a threat score of 105/100 (Critical). With this rating, the IP falls into the critical severity bracket — among the most dangerous addresses in our monitoring database.

The following attack categories were identified:

Path Enumeration

📊 Threat Analysis

The address 156.241.221.83 originates from San Francisco, United States, operating on the network of DynaNode LLC. It was identified through automated analysis of incoming network traffic across monitored endpoints. Over a period of 1 days, this IP generated 1 malicious requests, averaging approximately 1 requests per 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. Active path scanning has been detected — this IP probes for hundreds of common file and directory names. With 198 flagged addresses, United States represents a significant presence in our threat database. A score of 105/100 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

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🏢 Same network: AS400463

156.241.212.110 (130)196.51.9.71 (130)196.51.88.191 (105)196.51.57.202 (105)196.51.7.223 (105)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.

💡 User-Agent Analysis Techniques

Analyzing User-Agent strings reveals automated tools masquerading as legitimate browsers. Inconsistencies between claimed browser capabilities and actual behavior, impossible version combinations, and known scanner signatures help identify malicious clients.

🔍 Check Any IP Address

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