161.97.78.181📋 Copy

# INTELLIGENCE BRIEFING: 161.97.78.181

## Executive Summary

IP address 161.97.78.181 presents a moderate risk profile (score: 40/100) associated with Contabo cloud infrastructure in Nuremberg, Germany. The IP hosts web services under the opeensecurity.net domain with standard email authentication controls in place. No active malicious campaigns or known attacker indicators were identified.

---

## IP Profile Details

Address: 161.97.78.181/32

Risk Classification: Moderate Risk (40/100)

ASN: 51167 (Contabo)

Organization: Johannes Selg

Geolocation: Nuremberg, Germany (DE)

Coordinates: 51.17°N, 10.45°E

Timezone: Europe/Berlin

Network Infrastructure:

• Infrastructure Type: CloudCompute
• Provider: Contabo
• Connection Type: Cloud
• Hosting: Yes
• Anycast: No
• Mobile/Residential: No

---

## Network Classification & Control Plane

BGP Prefix: 161.97.78.0/23

Route Stability: False

Operator Score: 0.2174 (Minimal)

DNSBL Status: Listed on 2 of 8 threat feeds

RPKI State: Not evaluated

DNSSEC: Valid

CAA Records: Present

---

## DNS & Email Infrastructure

PTR Hostname: mail.opeensecurity.net

Forward Resolution: mail.opeensecurity.com

Primary Domain: opeensecurity.net

Forward Resolution Count: 1

Email Authentication:

• SPF: Configured
• DMARC: Configured
• TXT Record Count: 0

---

## Service Exposure

Open Ports:

Server Fingerprint: nginx/1.22.1

HTTP Version: 1.1

Status Code: 200

TTFB: 232ms

---

## Threat Indicators Assessment

• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• Blacklist Count: 0
• Known Campaigns: None
• Campaign Likelihood: None

---

## Historical Analysis

Total Observations: 24

Latest Observation: 2026-06-19T13:20:53 UTC

Recent Signal Observations:

• HTTP fingerprint confirmed (nginx/1.22.1)
• Geo validation plausible with 401.9km distance from claimed location
• Operator score: 0.25 (Minimal)
• Certificate search: 0 certificates resolved

---

## Relationship Graph

Total Relationships: 73

Primary Connections: Contabo network (68+ relationships)

Network Classification: Same Network (CONTABO)

---

## Neighborhood Analysis

Subnet: 161.97.78.181/24

Abuse Density: 0 (Low)

Total Siblings: 1

Active Siblings: 1

Threat Siblings: 1

Risk Distribution: 0 High, 0 Medium, 0 Low

---

## Recommended Actions

Immediate Actions

• Monitor: Continue monitoring for changes in threat indicators
• Allow with Logging: No immediate blocking required; IP maintains moderate risk profile

Firewall Rules (Reference)

```bash

# Allow HTTP/HTTPS (if not already filtered)

iptables -A INPUT -p tcp -s 161.97.78.181 --dport 80 -j ACCEPT

iptables -A INPUT -p tcp -s 161.97.78.181 --dport 443 -j ACCEPT

# Allow SSH with logging (monitor for abuse)

iptables -A INPUT -p tcp -s 161.97.78.181 --dport 22 -j LOG --log-prefix "SSH-161.97.78.181-"

iptables -A INPUT -p tcp -s 161.97.78.181 --dport 22 -j ACCEPT

```

WAF Considerations

• Review incoming traffic from this IP against WAF rules
• Monitor for unusual request patterns given the cloud hosting context

---

## Intelligence Assessment

This IP address operates on Contabo cloud infrastructure, a legitimate hosting provider frequently used for legitimate web services and email infrastructure. The presence of proper SPF and DMARC records suggests configured email authentication. DNSBL listings indicate the IP has been observed in some threat contexts, though current threat indicators remain negative. The moderate risk score reflects the cloud hosting environment rather than confirmed malicious activity. No immediate threat action required; continue standard monitoring procedures.

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.