ABUSE.MOM
THREAT REPORT

IP Threat Report
209.38.17.91

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-10-25 22:15:22
First seen: 2026-10-14 11:23:44
Last seen: 2026-10-18 00:05:49
105

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 105/100. Total malicious requests observed: 47.

BURSTREFERERUA_CHANGED
01

Geolocation & Classification

IP Address
209.38.17.91
Type
Hosting
Country
🇦🇺 Australia
City
Sydney
ISP
DigitalOcean, LLC
Organization
DigitalOcean, LLC
Autonomous System
AS14061 DigitalOcean, LLC
Hit Count
47
02

Detection Signatures

SignatureDescriptionPointsSeverity
Burst 10/2sAbnormally fast request rate — automated scanning+35
Burst 34/10sAbnormally fast request rate — automated scanning+35
Foreign refererReferer from unrelated external domain+10
UA changedMultiple User-Agents — bot rotation technique+25
Σ = 105
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

2026-10-14 11:23:44
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Burst 10/2s (+35), Burst 34/10s (+35), Foreign referer (+10)
2026-10-18 00:05:49
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

DigitalOcean, LLC
AS14061 · 🇦🇺 Australia

We have detected 6991 malicious IPs from this autonomous system.

View all IPs from AS14061 →
06

Recommendations

Actions taken & recommended

  • IP 209.38.17.91 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 209.38.17.0/24
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🌊 Traffic Flood Defense

IP 209.38.17.91 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.

🤖 User-Agent Anomaly Defense

IP 209.38.17.91 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

07

Neighbors in 209.38.17.0/24

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.

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

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

10

Threat Analysis

209.38.17.91 has been assigned a threat score of 105/100 (Critical). A score this high marks a critical threat actor. This address has demonstrated persistent, aggressive malicious behavior across multiple detection vectors.

The following attack categories were identified:

Request FloodingUser-Agent Anomaly

📊 Threat Analysis

Threat intelligence analysis has linked 209.38.17.91 to malicious activity originating from Sydney, Australia, operating on the network of DigitalOcean, LLC. The address has been under observation since its initial detection. During its 3-day observation window, we recorded 47 hostile requests from this IP — roughly 15.7 per day on average. Operating from datacenter infrastructure, this IP is typical of addresses used in organized attack operations. Cloud and VPS providers are commonly exploited as launching platforms for automated scanning. Two attack patterns were identified (Request Flooding and User-Agent Anomaly), suggesting a semi-automated campaign that targets multiple vulnerabilities. Our records show 1,242 malicious IPs originating from Australia, positioning it as a major contributor to global threat activity. A score of 105/100 places this address in the top tier of severity. Block and investigate any historical connections.

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 Australia

137.23.3.14 (310)20.92.77.159 (310)3.26.255.172 (308)3.26.98.5 (308)35.189.4.156 (298)View all →

🏢 Same network: AS14061

129.212.237.216 (308)168.144.34.140 (295)170.64.203.182 (280)159.223.199.244 (280)168.144.130.251 (280)View all →
12

Security Intelligence

💡 DDoS Mitigation Approaches

Distributed denial of service attacks overwhelm infrastructure with traffic volume. Effective mitigation combines always-on traffic scrubbing, anycast network distribution, rate limiting, and the ability to quickly scale absorption capacity during attacks.

💡 Deepfake Technology in Social Engineering

Deepfake audio and video enable convincing impersonation of executives and trusted individuals. Real-time voice cloning has been used in successful fraud campaigns, adding a new dimension to social engineering that traditional security training does not address.

🔍 Check Any IP Address

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