ABUSE.MOM
THREAT REPORT

IP Threat Report
216.73.216.213

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-27 20:54:15
First seen: 2026-02-17 17:25:09
Last seen: 2026-05-24 10:10:42
100

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 100/100. Total malicious requests observed: 258.

BURSTDANGER_PATHIMPORTRATIO_404REDIRECT_PROBEREFERERUA_SUS
01

Geolocation & Classification

IP Address
216.73.216.213
Type
Hosting
Country
🇺🇸 United States
City
Columbus
ISP
Amazon.com
Organization
Anthropic, PBC
Autonomous System
AS16509 Amazon.com, Inc.
Hit Count
258
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Burst 5/2sAbnormally fast request rate — automated scanning+35
Burst: 5 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 6 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 8 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 9 req / 2sAbnormally fast request rate — automated scanning+35
Danger medium hits: 2Medium-risk: admin panels, config files+20
Foreign refererReferer from unrelated external domain+10
Foreign referer seenReferer from unrelated external domain+10
Imported from old blocklistBehavioral anomaly detected by automated analysis+0
Probe pattern 302->404 same pathBehavioral anomaly detected by automated analysis+20
UA suspicious (short/empty)Behavioral anomaly detected by automated analysis+15
Σ = 265
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

2026-02-17 17:25:09
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio 40-60% (+15), Burst 5/2s (+35), Burst: 5 req / 2s (+35)
2026-05-24 10:10:42
Last malicious request observed
Total score reached: 100/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Amazon.com
AS16509 · 🇺🇸 United States
06

Recommendations

Actions taken & recommended

  • IP 216.73.216.213 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 216.73.216.0/24
  • 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 216.73.216.213 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

🌊 Traffic Flood Defense

IP 216.73.216.213 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.

🤖 User-Agent Anomaly Defense

IP 216.73.216.213 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

07

Neighbors in 216.73.216.0/24

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
Spamhaus ZEN

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

10

Threat Analysis

216.73.216.213 has been assigned a threat score of 100/100 (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:

Path EnumerationRequest FloodingUser-Agent Anomaly

📊 Threat Analysis

Network traffic from 216.73.216.213, located in Columbus, United States, operating on the network of Amazon.com, has been classified as malicious by our automated threat scoring engine. Over a period of 95 days, this IP generated 258 malicious requests, averaging approximately 2.7 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 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 180 blocked IPs in our database, making it a significant source of malicious traffic. A score of 100/100 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

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🏢 Same network: AS16509

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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.

💡 IoT Device Compromise Patterns

Internet of Things devices are prime targets for botnet recruitment due to weak default credentials, infrequent updates, and always-on connectivity. Compromised IoT devices generate persistent scanning and attack traffic without their owners knowledge.

🔍 Check Any IP Address

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