ABUSE.MOM
THREAT REPORT

IP Threat Report
212.33.251.21

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-06-29 14:44:11
First seen: 2026-06-22 09:41:15
Last seen: 2026-06-25 15:05:55
80

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 80/100. Total malicious requests observed: 468.

01

Geolocation & Classification

IP Address
212.33.251.21
Type
Unknown
Country
🇷🇺 Russia
City
Perm
ISP
JSC "ER-Telecom Holding"
Organization
JSC "ER-Telecom Holding"
Autonomous System
Unknown
Hit Count
468
02

Detection Signatures

SignatureDescriptionPointsSeverity
DDoS / FloodBehavioral anomaly detected by automated analysis+0
Σ = 0
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

2026-06-22 09:41:15
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
DDoS / Flood
2026-06-25 15:05:55
Last malicious request observed
Total score reached: 80/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
06

Recommendations

Actions taken & recommended

  • IP 212.33.251.21 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

⚙️ Defensive Recommendations

Block 212.33.251.21 at the network perimeter. Implement defense-in-depth combining IP blocking with application-layer protections.

09

Blacklist Status (DNSBL)

This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.

✓ Clean
cbl.abuseat.org
✓ Clean
b.barracudacentral.org
✓ Clean
zen.spamhaus.org

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

10

Threat Analysis

212.33.251.21 has been assigned a threat score of 80/100 (Critical). A score this high marks a critical threat actor. This address has demonstrated persistent, aggressive malicious behavior across multiple detection vectors.

📊 Threat Analysis

Threat intelligence analysis has linked 212.33.251.21 to malicious activity originating from Perm, Russia, operating on the network of JSC "ER-Telecom Holding". The address has been under observation since its initial detection. The address has been active for 3 days in our monitoring system, producing 468 flagged requests at a rate of ~156/day. With 101 flagged addresses, Russia represents a significant presence in our threat database. A threat score of 80/100 places this IP in the high-risk category. Blocking at the firewall level is recommended.

11

Related Threats

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157.22.102.172 (313)178.130.54.159 (288)185.103.167.63 (265)72.56.191.6 (265)95.182.125.201 (265)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.

💡 State-Sponsored Cyber Operations

Nation-state actors conduct sophisticated campaigns for espionage, sabotage, and influence operations. Their resources exceed typical criminal organizations, enabling zero-day exploitation, long-term persistent access, and attacks on critical infrastructure.

🔍 Check Any IP Address

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