IP Threat Report
20.203.183.135
ABUSE.MOM — BEHAVE OR GET EXPOSED
Geolocation & Classification
Detection Signatures
| Signature | Description | Points | Severity |
|---|---|---|---|
| 404 ratio 40-60% | Majority of requests returned 404 — enumeration | +15 | |
| 404 ratio >= 60% | Majority of requests returned 404 — enumeration | +25 | |
| Burst 102/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 103/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 104/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 105/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 107/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 109/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 112/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 114/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 115/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 119/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 121/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 126/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 132/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 139/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 141/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 166/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 169/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 17/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 173/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 187/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 198/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 20/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 200/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 25/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 26/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 30/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 31/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 32/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 34/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 35/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 36/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 37/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 38/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 39/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 40/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 41/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 42/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 43/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 44/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 45/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 46/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 47/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 48/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 49/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 50/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 51/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 52/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 53/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 55/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 57/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 57/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 58/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 59/2s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 60/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 62/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 63/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 66/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 77/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 90/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 93/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 94/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 95/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 98/10s | Abnormally fast request rate — automated scanning | +35 | |
| Burst 99/10s | Abnormally fast request rate — automated scanning | +35 | |
| Danger medium hits: 1 | Medium-risk: admin panels, config files | +10 | |
| Danger medium hits: 108 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 116 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 118 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 120 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 122 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 126 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 131 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 132 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 137 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 162 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 173 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 2 | Medium-risk: admin panels, config files | +20 | |
| Danger medium hits: 227 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 232 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 252 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 270 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 292 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 294 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 308 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 318 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 336 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 345 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 44 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 444 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 58 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 60 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 62 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 64 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 66 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 77 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 78 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 90 | Medium-risk: admin panels, config files | +60 | |
| Danger medium hits: 99 | Medium-risk: admin panels, config files | +60 | |
| Danger strong hits: 1 | High-risk paths: shells, RCE vectors, exploits | +25 | |
| Danger strong hits: 12 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 14 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 15 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 18 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 2 | High-risk paths: shells, RCE vectors, exploits | +50 | |
| Danger strong hits: 21 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 3 | High-risk paths: shells, RCE vectors, exploits | +75 | |
| Danger strong hits: 30 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 32 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 34 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 4 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 42 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 49 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 5 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 53 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Danger strong hits: 6 | High-risk paths: shells, RCE vectors, exploits | +100 | |
| Probe 302→404 | Behavioral anomaly detected by automated analysis | +20 | |
| UA suspicious | Behavioral anomaly detected by automated analysis | +15 |
Observed Activity
Reconstructed HTTP requests from server access logs. Target domains redacted for security.
* Typical request patterns for detected signatures. Actual target domains are redacted.
Timeline
Network Provider
Recommendations
Actions taken & recommended
- IP 20.203.183.135 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
🔎 Path Enumeration Protection
Block scanning from 20.203.183.135: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.
🌊 Traffic Flood Defense
IP 20.203.183.135 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.
🤖 Bot Detection
Address UA spoofing from 20.203.183.135: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.
Blacklist Status (DNSBL)
This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.
Checked: Spamhaus, SpamCop, Barracuda, SORBS, CBL, UCEProtect. Results may change over time.
Threat Analysis
20.203.183.135 has been assigned a threat score of 280/100 (Critical). This places it in the critical threat category. Immediate blocking is strongly advised across all network perimeters.
The following attack categories were identified:
📊 Threat Analysis
The address 20.203.183.135 originates from Zurich, Switzerland, operating on the network of Microsoft Corporation. It was identified through automated analysis of incoming network traffic across monitored endpoints. The address has been active for 8 days in our monitoring system, producing 6,896 flagged requests at a rate of ~862/day. This address belongs to a datacenter or cloud hosting provider. Hosting IPs are frequently leveraged by threat actors who rent cheap VPS instances specifically for conducting attacks. The diversity of 3 separate attack methods suggests a comprehensive attack toolkit — likely an automated scanner that tests for vulnerabilities across multiple categories. Switzerland currently accounts for 12 blocked IPs in our database, making it a notable source of malicious traffic. With a threat score of 280/100, 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.
Related Threats
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.
💡 IPv6 Scanning Challenges
The vast IPv6 address space makes traditional sequential scanning impractical. However, attackers use DNS records, certificate transparency logs, and predictable address patterns to identify active IPv6 hosts, adapting their techniques to the expanded address space.