177.44.71.3📋 Copy

# IPDebrief Intelligence Briefing: 177.44.71.3/32

## Executive Summary

IP address 177.44.71.3/32 is classified as Moderate Risk (risk score: 55/100) with evidence of malicious activity. The IP belongs to MASTER S/A (ASN 28202) within the 177.44.0.0/17 block in Brazil. While the IP itself is firewalled with no active services, it is listed on 3 of 8 DNSBLs and exists within a subnet showing elevated abuse density.

---

## Ownership & Infrastructure

• Organization: MASTER S/A
• ASN: 28202
• CIDR Block: 177.44.0.0/17
• RIR: LACNIC
• PTR Record: 177-44-71-3.ija-wr.mastercabo.com.br
• Forward Resolution: 177-44-71-3.ija-wr.mastercabo.com.br (unconfirmed)
• Service Status: Firewalled / No Services

---

## Threat Indicators

• DNSBL Listings: 3/8 total lists (moderate listing rate)
• Abuse Confidence: Listed on threat feeds
• Campaign Association: None detected
• Known Attacker/Spam Source: Not flagged
• Tor Exit Node: No
• Blacklist Count: 0 (traditional blacklists)

---

## Geolocation Data

• Country: Brazil (BR)
• Region: Minas Gerais (MG)
• City: Itajuba
• Accuracy Radius: 2500km
• Geolocation Validity: Unreliable (distance validation failure: 9476km vs plausible minimum RTT)

---

## Neighborhood Analysis

The /24 subnet (177.44.71.3/24) shows concerning patterns:

• Total Siblings: 97 IPs
• Active Siblings: 54
• Threat Siblings: 44
• Abuse Density: 0.4536 (high)
• Classification: Mixed
• Risk Distribution: 15 high-risk, 71 medium-risk, 10 low-risk IPs

Notable high-risk neighbors include:

• 177.44.71.6 (risk: 80/100)
• 177.44.71.7 (risk: 80/100)
• 177.44.71.10 (risk: 80/100)

---

## Control Plane & Routing

• BGP Prefix: 177.44.0.0/17
• Route Stability: Unstable
• 30-Day Route Changes: 0
• RPKI State: Not verified
• DNSSEC Valid: Yes
• Operator Score: 0.1304 (Minimal)

---

## Service & Network Role

• Infrastructure Type: Not CDN, VPN, proxy, or hosting
• Cloud Provider: No
• Mobile Carrier: No
• Open Ports: None detected
• TLS Certificate: None
• HTTP Response: None

---

## Observed Signals (21 Observations)

Recent observations indicate:

• 2026-06-22: DNSBL listings detected (8 total lists, 3 active, high severity)
• 2026-06-22: Operator score evaluated as "Minimal"
• 2026-06-17: Subnet abuse density flagged at 0.4536 with mixed classification

---

## Recommended Actions

Monitoring

• Increase logging verbosity and review recent activity from this IP
• Severity: High (elevated risk score 55/100)

Firewall Rules

iptables:

```bash

iptables -A INPUT -s 177.44.71.3 -j DROP

```

nftables:

```bash

nft add rule inet filter input ip saddr 177.44.71.3 drop

```

nginx:

```nginx

deny 177.44.71.3;

```

pfSense:

```

177.44.71.3/32

```

Cloudflare WAF:

```json

{

"description": "Block 177.44.71.3 — IPDebrief risk score 55",

"action": "block",

"filter": {

"expression": "ip.src eq 177.44.71.3"

}

}

```

AWS WAF:

```json

{

"Addresses": ["177.44.71.3/32"],

"Description": "IPDebrief risk 55"

}

```

---

## Intelligence Assessment

This IP is not actively serving web services but maintains a threat profile through DNSBL listings. The subnet environment shows significant abuse activity with nearly half of active siblings flagged as threats. The IP should be considered for blocking due to its moderate risk classification and neighborhood correlation. Further investigation of the /24 subnet is recommended to identify additional threat actors.

Classification: Moderate Risk — Monitor/Block

Priority: Medium

Status: Active Threat Indicator

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