188.40.28.15📋 Copy

# IP INTELLIGENCE BRIEFING

Target: 188.40.28.15/32

Classification: MODERATE RISK

Date: 2026-06-21

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## EXECUTIVE SUMMARY

IP 188.40.28.15 is a cloud-hosted web server operated by Hetzner Online GmbH (ASN 24940) in Bavaria, Germany. The IP presents a moderate risk score of 65/100 with no known malicious campaigns. Despite the elevated risk classification, the subnet shows clean classification with zero threat siblings. The IP is associated with domain www235.your-server.de and hosts standard web services (HTTP/HTTPS/SSH).

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## INFRASTRUCTURE PROFILE

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## NETWORK CLASSIFICATION

• DNS Hostname: www235.your-server.de
• Domain: your-server.de
• Open Ports: 22/SSH, 80/HTTP, 443/HTTPS
• Server Banner: Apache (HTTP/2.0 enabled)
• TLS Certificate: DigiCert issued for CN=*.your-server.de
• Email Authentication: SPF and DMARC configured
• Cloud Hosting: Yes

---

## THREAT INTELLIGENCE

Current Indicators:

• DNSBL Listings: 3 of 8 total lists
• Known Campaigns: None detected
• Tor Exit Node: No
• Spam Source: No
• Known Attacker: No
• Blacklist Count: 0 (abuseConfidenceScore null)

Temporal Analysis:

• 24 historical observations collected
• Recent signals confirm ASN 24940 Hetzner association
• Network classification: CLEAN
• Control plane: Route stability flagged as false, BGP prefix changes observed

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## NEIGHBORHOOD ANALYSIS

Subnet: 188.40.28.15/24

• Abuse Density: 0 (clean classification)
• Active Siblings: 3
• Threat Siblings: 0

No high-risk neighbors detected in immediate subnet vicinity.

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## RELATIONSHIP MAPPING

Primary Associations:

• DNS: www235.your-server.de (12 relationship records)
• Network: HETZNER-nbg1-dc1 (same network)

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## OBSERVATION HISTORY

Key signals from recent observations:

• CAA, DNSSEC, and FCRDNS validation data collected
• HTTP server fingerprint: Apache with HTTP/2, 404 status codes observed
• Response time: ~366ms (TTFB)
• Security headers: CSP, HSTS, and referrer policy absent

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## SECURITY RECOMMENDATIONS

MONITORING

• Increase logging verbosity and review recent activity from this IP (severity: HIGH)
• Monitor for route stability changes in BGP prefix 188.40.0.0/16

FIREWALL RULES

Deploy the following blocking rules if risk justification exists:

iptables:

```bash

iptables -A INPUT -s 188.40.28.15 -j DROP

```

nftables:

```bash

nft add rule inet filter input ip saddr 188.40.28.15 drop

```

nginx:

```nginx

deny 188.40.28.15;

```

AWS WAF:

```json

{

"Addresses": ["188.40.28.15/32"],

"Description": "IPDebrief risk 65"

}

```

---

## ASSESSMENT

The IP presents moderate risk primarily due to DNSBL listings (3/8) and control plane instability flags. However, the subnet demonstrates clean classification with no threat siblings. The infrastructure is legitimate cloud hosting with proper email authentication. SOC analysts should monitor for elevated activity but may classify as LOW-PRIORITY if no specific threat indicators correlate.

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Prepared by: IPDebrief Intelligence Analysis

Classification: INTERNAL USE ONLY

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