37.77.55.91📋 Copy

# THREAT INTELLIGENCE BRIEFING

Target: 37.77.55.91/32

Classification: Moderate Risk Network Infrastructure

Report Date: 2026-07-24

Analyst: IPDebrief Intelligence Team

---

## EXECUTIVE SUMMARY

IP 37.77.55.91 is classified as MODERATE RISK (Risk Score: 55/100). The address is assigned to ASN 51020 (Al-Jazeera) within RIPE registry block 37.77.52.0/22. While the IP itself shows no active threat indicators, it has been listed on 3 out of 8 DNSBLs with high severity ratings and exhibits conflicting geolocation data that warrants monitoring.

---

## OWNERSHIP & INFRASTRUCTURE

Geolocation Anomaly: Multiple data sources report conflicting locations. Primary profile indicates Bulgaria (Sofia), while recent observations show Iraq (Baghdad). This discrepancy may indicate routing anomalies or misconfigured geolocation data.

---

## THREAT POSTURE

Current Risk Indicators

• Risk Score: 55/100 (Moderate)
• Blacklist Count: 0 direct blocks
• DNSBL Listings: 3 of 8 lists (HIGH severity)
• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No

Observed Signals (Last 14 Observations)

• 2026-07-24 17:31: Listed on 3 DNSBLs with high severity
• 2026-07-24 17:31: DNSSEC validation confirmed (valid)
• 2026-07-24 17:32: Geolocation reported as Iraq (Baghdad)
• 2026-07-24 17:34: Ownership stability confirmed (no changes)

Threat Persistence: Low (0 threat persistence days, 1 threat observation count). Not classified as persistently malicious.

---

## NEIGHBORHOOD ANALYSIS

Subnet: 37.77.55.0/24

Total Siblings: 7

Abuse Density: 0

Risk Distribution: 0 High / 1 Medium / 6 Low

Notable Neighbors:

Assessment: Subnet exhibits low-abuse density with most neighbors showing low-to-moderate risk. No coordinated malicious activity patterns detected.

---

## RELATIONSHIP MAPPING

• 3 relationships identified
• All relationships classified as "Same Network" pointing to Al-Jazeera infrastructure
• No external hostname, certificate, or organizational links detected

---

## RECOMMENDED ACTIONS

Priority: HIGH

1. Logging Enhancement

- Increase logging verbosity for traffic from 37.77.55.91

- Review recent activity patterns against baseline

2. Firewall Implementation

```bash

# iptables

iptables -A INPUT -s 37.77.55.91 -j DROP

# nftables

nft add rule inet filter input ip saddr 37.77.55.91 drop

# nginx

deny 37.77.55.91;

# Cloudflare WAF

filter: ip.src eq 37.77.55.91

action: block

description: IPDebrief risk score 55

# AWS WAF

Addresses: ["37.77.55.91/32"]

Description: IPDebrief risk 55

```

Rationale

Risk score of 55/100 with DNSBL listings suggests potential for abuse activity. Blocking recommended while maintaining monitoring capability.

---

## CONCLUSION

IP 37.77.55.91 represents moderate-risk infrastructure assigned to legitimate ISP (Al-Jazeera) but exhibiting concerning DNSBL listings and geolocation inconsistencies. The lack of open services and no active threat indicators suggests this IP may be used for infrastructure purposes but warrants continued monitoring. The subnet shows low abuse density, indicating isolated rather than coordinated activity.

Final Classification: MONITOR WITH RESTRICTIONS

---

*Report generated by IPDebrief Intelligence Platform. Recommendations are probabilistic and should be combined with additional threat intelligence signals before operational action.*

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