ABUSE.MOM
THREAT REPORT

IP Threat Report
121.200.216.56

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-22 08:53:25
First seen: 2026-05-04 23:00:05
Last seen: 2026-05-06 05:00:05
70

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 70/100. Total malicious requests observed: 2.

DANGER_PATHRATIO_404REFERER
01

Geolocation & Classification

IP Address
121.200.216.56
Type
Residential
Country
🇻🇳 Vietnam
City
Yen Hoa
ISP
MCO HA NOI TECHNOLOGY COMPANY LIMITED
Organization
Vietnam Internet Network Information Center
Autonomous System
AS154247 MCO HA NOI TECHNOLOGY COMPANY LIMITED
Hit Count
2
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger medium hits: 4Medium-risk: admin panels, config files+40
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Foreign referer seenReferer from unrelated external domain+10
Danger strong hits: 2High-risk paths: shells, RCE vectors, exploits+50
Danger medium hits: 2Medium-risk: admin panels, config files+20
Σ = 135
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

2026-05-04 23:00:05
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger medium hits: 4 (+40), 404 ratio 40-60% (+15), Foreign referer seen (+10)
2026-05-06 05:00:05
Last malicious request observed
Total score reached: 70/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

MCO HA NOI TECHNOLOGY COMPANY LIMITED
AS154247 · 🇻🇳 Vietnam
06

Recommendations

Actions taken & recommended

  • IP 121.200.216.56 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 121.200.216.0/24
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🔎 Path Enumeration Protection

Block scanning from 121.200.216.56: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

07

Neighbors in 121.200.216.0/24

Other blocked IPs from the same /24 subnet — indicates systematic abuse from this network range.

08

Open Ports & Services

Network reconnaissance data from Shodan. Open ports may indicate running services, misconfigurations, or potential attack surfaces.

OPEN PORTS (2)
PortServiceRiskDescription
21FTPMediumFile Transfer Protocol — often targeted for anonymous login attacks
22SSHLowSecure Shell — common brute force target for remote access

⚠️ 1 high-risk port detected on 121.200.216.56. These services should not be publicly accessible without strict firewall rules.

DETECTED TECHNOLOGIES
pureftpd:pure-ftpdopenbsd:openssh:8.9p1canonical:ubuntu_linux

Data source: Shodan InternetDB. Scanned independently of abuse.mom.

09

Blacklist Status (DNSBL)

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

⛔ LISTED
bl.spamcop.net
⛔ LISTED
zen.spamhaus.org
⛔ LISTED
truncate.gbudb.net
⛔ LISTED
dnsbl-1.uceprotect.net
✓ Clean
ix.dnsbl.manitu.net
✓ Clean
dnsbl.sorbs.net
✓ Clean
b.barracudacentral.org
✓ Clean
psbl.surriel.com

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

10

Threat Analysis

121.200.216.56 has been assigned a threat score of 70/100 (High). At this threat level, the IP is considered high risk. Firewall rules should be updated to deny traffic from this source.

The following attack categories were identified:

Path Enumeration

📊 Threat Analysis

Network traffic from 121.200.216.56, located in Yen Hoa, Vietnam, operating on the network of MCO HA NOI TECHNOLOGY COMPANY LIMITED, has been classified as malicious by our automated threat scoring engine. The address has been active for 1 days in our monitoring system, producing 2 flagged requests at a rate of ~2/day. The address is classified as residential, meaning it likely belongs to an end-user ISP connection. Malicious activity from residential IPs typically indicates device compromise or botnet membership. The IP exhibits directory enumeration behavior, systematically requesting non-existent paths to discover hidden files and misconfigured resources. Vietnam currently accounts for 105 blocked IPs in our database, making it a significant source of malicious traffic. A threat score of 70/100 places this IP in the high-risk category. Blocking at the firewall level is recommended.

This IP is classified as residential, suggesting it may belong to a compromised home device, IoT botnet member, or an infected personal computer. Residential IPs involved in attacks often indicate malware infection without the owner's knowledge.

11

Related Threats

🇻🇳 Top threats from Vietnam

103.216.118.66 (273)210.2.86.189 (235)103.61.123.221 (235)116.118.47.174 (235)14.225.32.188 (235)View all →

🏢 Same network: AS154247

121.200.216.13 (105)121.200.217.28 (105)121.200.217.27 (105)121.200.216.37 (70)View all →
12

Security Intelligence

💡 Prototype Pollution Attacks

Prototype pollution manipulates JavaScript object prototypes to inject properties that affect all objects in an application. This can lead to denial of service, property injection, and in some cases remote code execution in Node.js applications.

💡 DNS-Based Threat Detection

Monitoring DNS queries reveals malicious activity including command-and-control communication, data exfiltration through DNS tunneling, and connections to known malicious domains. DNS is often the first indicator of compromise in network forensics.

🔍 Check Any IP Address

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