ABUSE.MOM
THREAT REPORT

IP Threat Report
45.133.176.87

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-07-31 21:12:20
First seen: 2026-07-19 08:25:39
Last seen: 2026-07-26 04:05:45
195

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 195/100. Total malicious requests observed: 219.

BURSTDANGER_PATHUA_CHANGED
01

Geolocation & Classification

IP Address
45.133.176.87
Type
Hosting
Country
🇹🇼 Taiwan
City
Taipei
ISP
Zenlayer Inc
Organization
Shiftek Hosting
Autonomous System
AS21859 Zenlayer Inc
Hit Count
219
02

Detection Signatures

SignatureDescriptionPointsSeverity
Burst 26/10sAbnormally fast request rate — automated scanning+35
Burst 7/2sAbnormally fast request rate — automated scanning+35
Danger strong hits: 26High-risk paths: shells, RCE vectors, exploits+100
UA changedMultiple User-Agents — bot rotation technique+25
Σ = 195
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

2026-07-19 08:25:39
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Burst 26/10s (+35), Burst 7/2s (+35), Danger strong hits: 26 (+100)
2026-07-26 04:05:45
Last malicious request observed
Total score reached: 195/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Zenlayer Inc
AS21859 · 🇹🇼 Taiwan
06

Recommendations

Actions taken & recommended

  • IP 45.133.176.87 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 45.133.176.0/24
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🌊 Flood / DDoS Mitigation

Implement limit_req_zone in nginx. Deploy CDN with DDoS protection. Configure SYN cookies and connection tracking to throttle 45.133.176.87.

🤖 Bot Detection

Address UA spoofing from 45.133.176.87: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.

07

Neighbors in 45.133.176.0/24

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

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

10

Threat Analysis

45.133.176.87 has been assigned a threat score of 195/100 (Critical). This places it in the critical threat category. Immediate blocking is strongly advised across all network perimeters.

The following attack categories were identified:

Request FloodingUser-Agent Anomaly

📊 Threat Analysis

IP address 45.133.176.87 has been traced to Taipei, Taiwan, operating on the network of Zenlayer Inc. Our threat detection systems have flagged this address based on observed malicious behavior patterns. Our sensors captured 219 malicious requests from this address across a 6-day span, reflecting a sustained attack cadence of ~36.5 requests per day. The IP is classified as hosting/datacenter infrastructure, commonly associated with rented servers used for automated attack campaigns, botnet command-and-control, or vulnerability scanning at scale. Two attack patterns were identified (Request Flooding and User-Agent Anomaly), suggesting a semi-automated campaign that targets multiple vulnerabilities. Taiwan currently accounts for 101 blocked IPs in our database, making it a significant source of malicious traffic. A score of 195/100 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 Taiwan

34.81.125.215 (298)35.201.233.251 (288)45.133.176.26 (255)45.133.176.17 (255)45.133.176.100 (255)View all →

🏢 Same network: AS21859

45.133.176.26 (255)45.133.176.17 (255)45.133.176.100 (255)45.133.176.99 (255)45.133.176.98 (255)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.

💡 HTTP Request Smuggling

Request smuggling exploits differences in how front-end and back-end servers parse HTTP requests. This technique can bypass security controls, poison web caches, and hijack other users sessions by desynchronizing request boundaries.

🔍 Check Any IP Address

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