ABUSE.MOM
THREAT REPORT

IP Threat Report
198.23.171.91

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-30 16:03:51
First seen: 2026-02-26 21:00:05
Last seen: 2026-05-07 18:00:05
165

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 165/100. Total malicious requests observed: 6.

DANGER_PATHREDIRECT_PROBEREFERERUA_CHANGEDRATIO_404BURST
01

Geolocation & Classification

IP Address
198.23.171.91
Type
Residential
Country
🇺🇸 United States
City
Buffalo
ISP
HostPapa
Organization
PNV GROUP Ltd
Autonomous System
AS36352 HostPapa
Hit Count
6
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger medium hits: 2Medium-risk: admin panels, config files+20
Probe pattern 302->404 same pathBehavioral anomaly detected by automated analysis+20
Foreign referer seenReferer from unrelated external domain+10
UA changed for same IPMultiple User-Agents — bot rotation technique+25
Danger medium hits: 12Medium-risk: admin panels, config files+60
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Burst: 5 req / 2sAbnormally fast request rate — automated scanning+35
Danger medium hits: 6Medium-risk: admin panels, config files+60
Σ = 245
03

Observed Activity

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

[redacted]
GET
/
200
[redacted]
GET
/page
200
Requests shown: 2 · HTTP 404: 0 · Dangerous patterns: 0

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

04

Timeline

2026-02-26 21:00:05
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger medium hits: 2 (+20), Probe pattern 302->404 same path (+20), Foreign referer seen (+10)
2026-05-07 18:00:05
Last malicious request observed
Total score reached: 165/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

HostPapa
AS36352 · 🇺🇸 United States
06

Recommendations

Actions taken & recommended

  • IP 198.23.171.91 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 198.23.171.91 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

🤖 User-Agent Anomaly Defense

IP 198.23.171.91 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

🌊 Traffic Flood Defense

IP 198.23.171.91 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.

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

198.23.171.91 has been assigned a threat score of 165/100 (Critical). This places it in the critical threat category. Immediate blocking is strongly advised across all network perimeters.

The following attack categories were identified:

Path EnumerationUser-Agent AnomalyRequest Flooding

📊 Threat Analysis

Our monitoring infrastructure has identified 198.23.171.91, geolocated to Buffalo, United States, operating on the network of HostPapa, as a source of suspicious network activity. Over a period of 69 days, this IP generated 6 malicious requests, averaging approximately 0.1 requests per day. This is a residential IP address, suggesting a compromised home device such as a router, smart appliance, or infected workstation participating in a botnet. The combination of 3 distinct attack vectors indicates a sophisticated, multi-pronged threat actor deploying automated tools that probe multiple attack surfaces simultaneously. United States currently accounts for 199 blocked IPs in our database, making it a significant source of malicious traffic. With a threat score of 165/100, this IP is among the most dangerous addresses in our database. Immediate and complete blocking is strongly recommended.

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: AS36352

23.94.40.119 (318)172.245.95.40 (280)23.94.28.183 (255)192.227.215.35 (255)172.245.214.62 (245)View all →
12

Security Intelligence

💡 Server-Side Request Forgery (SSRF)

SSRF attacks trick servers into making requests to internal resources that should not be publicly accessible. This can expose cloud metadata endpoints, internal APIs, and private network services, potentially leading to full infrastructure compromise.

💡 Zero-Day Vulnerability Markets

Zero-day vulnerabilities command premium prices in both legitimate and criminal markets. Government agencies, defensive security firms, and criminal organizations compete for these undisclosed flaws, creating a complex ecosystem around vulnerability discovery and disclosure.

🔍 Check Any IP Address

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