ABUSE.MOM
THREAT REPORT

IP Threat Report
23.230.243.161

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-27 07:23:46
First seen: 2026-02-17 17:25:06
Last seen: 2026-02-17 17:26:16
90

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 90/100. Total malicious requests observed: 3.

BOT_UAUA_CHANGEDDANGER_PATHRATIO_404IMPORT
01

Geolocation & Classification

IP Address
23.230.243.161
Type
Hosting
Country
🇺🇸 United States
City
Santa Clara
ISP
CenturyLink Communications, LLC
Organization
EGIHosting
Autonomous System
AS3561 CenturyLink Communications, LLC
Hit Count
3
02

Detection Signatures

SignatureDescriptionPointsSeverity
UA bot: curlKnown bot/crawler User-Agent detected+40
UA changed for same IPMultiple User-Agents — bot rotation technique+25
Danger medium hits: 1Medium-risk: admin panels, config files+10
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Imported from old blocklistBehavioral anomaly detected by automated analysis+0
Σ = 90
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

2026-02-17 17:25:06
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
UA bot: curl (+40), UA changed for same IP (+25), Danger medium hits: 1 (+10)
2026-02-17 17:26:16
Last malicious request observed
Total score reached: 90/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

CenturyLink Communications, LLC
AS3561 · 🇺🇸 United States
06

Recommendations

Actions taken & recommended

  • IP 23.230.243.161 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 23.230.243.0/24
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🤖 User-Agent Anomaly Defense

IP 23.230.243.161 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

🔎 Directory Scan Defense

IP 23.230.243.161 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

07

Neighbors in 23.230.243.0/24

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

08

Open Ports & Services

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

OPEN PORTS (3)
PortServiceRiskDescription
1180UnknownLowService on port 1180
40000UnknownLowService on port 40000
60000UnknownLowService on port 60000

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

23.230.243.161 has been assigned a threat score of 90/100 (Critical). This places it in the critical threat category. Immediate blocking is strongly advised across all network perimeters.

The following attack categories were identified:

User-Agent AnomalyPath Enumeration

📊 Threat Analysis

Network traffic from 23.230.243.161, located in Santa Clara, United States, operating on the network of CenturyLink Communications, LLC, has been classified as malicious by our automated threat scoring engine. Over a period of 1 days, this IP generated 3 malicious requests, averaging approximately 3 requests per day. Classified as a hosting IP, this address likely runs on a rented server or cloud instance. Attackers prefer datacenter IPs for their high bandwidth and disposable nature. The dual attack vectors of User-Agent Anomaly combined with Path Enumeration indicate a coordinated assault rather than opportunistic scanning. With 22 flagged addresses, United States represents a notable presence in our threat database. With a threat score of 90/100, this IP is among the most dangerous addresses in our database. Immediate and complete blocking is strongly recommended.

This IP belongs to a hosting or data center provider. Malicious traffic from hosting infrastructure often originates from compromised VPS instances, rented servers used for scanning campaigns, or abused free-tier cloud accounts. Hosting providers typically respond to abuse reports within 24-72 hours.

11

Related Threats

🇺🇸 Top threats from United States

45.39.54.36 (105)23.230.243.157 (90)64.29.74.231 (85)50.117.105.236 (80)50.117.105.0 (80)View all →

🏢 Same network: AS3561

45.39.54.36 (105)23.230.243.157 (90)64.29.74.231 (85)50.117.105.236 (80)50.117.105.0 (80)View all →
12

Security Intelligence

💡 HTTP Header Analysis for Threat Detection

Examining HTTP headers beyond User-Agent reveals attack tools and automated scripts. Missing standard headers, unusual ordering, non-standard values, and inconsistencies with claimed client identity all serve as reliable detection signals.

💡 WebSocket Security Considerations

WebSocket connections bypass traditional HTTP security controls, creating opportunities for cross-site WebSocket hijacking, denial of service, and data injection. Proper origin validation, authentication, and message rate limiting are essential for secure WebSocket implementations.

🔍 Check Any IP Address

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