181.72.20.86
## INTELLIGENCE BRIEFING: 181.72.20.86
Classification: Low-Risk Infrastructure IP
Date: 2026-07-28
Analyst: IPDebrief Intelligence
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EXECUTIVE SUMMARY
IP 181.72.20.86 is a low-risk telecommunications infrastructure address belonging to Telmex Chile S.A. HFC (AS6535). The address shows stable geolocation data consistent with Santiago, Chile. While the IP carries a single DNSBL listing across 8 total lists, overall threat indicators remain absent. No active malicious campaigns, known attacker signatures, or spam source indicators were detected. The address is firewalled with no open services.
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OWNERSHIP & GEOLOCATION
| Attribute | Value |
|---|---|
| ASN | 6535 |
| Organization | Telmex Chile S.A HFC |
| Network Range | 181.72.16.0 - 181.72.31.255 (181.72.16.0/20) |
| RIR | LACNIC |
| Country | Chile (CL) |
| City | Santiago |
| Region | Santiago Metropolitan |
| Registration Date | 2011-12-15 |
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THREAT INDICATORS
- Risk Score: 25 (Low)
- Blacklist Status: 1 of 8 total DNSBL listings
- Known Campaigns: None detected
- Known Attacker: False
- Spam Source: False
- Tor Exit Node: False
- Abuse Confidence Score: Not applicable
- Threat Persistence: Not persistently malicious
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NETWORK CHARACTERISTICS
| Metric | Status |
|---|---|
| Open Ports | None detected |
| DNS Resolution | No PTR record |
| Hosted Domains | 0 |
| Reverse DNS | Not configured |
| DNSSEC Valid | Yes |
| Service Purpose | Firewalled / No Services |
| BGP Prefix | 181.72.0.0/17 |
| Route Stability | Not stable |
| Transit Provider | Comcast |
| Traceroute Hops | 30 (18 timed out) |
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NEIGHBORHOOD ANALYSIS
Subnet: 181.72.20.0/24
- Abuse Density: 0%
- Total Siblings: 1
- Threat Siblings: 0
- Risk Distribution: 1 low-risk IP
| Neighbor IP | Risk Score | Authority Score |
|---|---|---|
| 181.72.20.234 | 25 | 50 |
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OBSERVATION HISTORY
Total observations: 12
Most Recent Observations (2026-07-28):
- Geolocation: Santiago, Chile (confidence: 0.70)
- Blacklist Status: Listed on 8 lists, 1 active listing with high severity (confidence: 0.85)
- DNSSEC: Valid (confidence: 0.90)
- ASN: AS6535 - Telmex Servicios Empresariales S.A., CL (confidence: 0.85)
- PTR Record: Not configured (confidence: 0.90)
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RELATIONSHIPS
| Type | Target |
|---|---|
| Same Network | 181.72.16.0 - 181.72.31.255 |
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RECOMMENDED ACTIONS
Current Risk Level: LOW
| Action | Recommendation |
|---|---|
| Firewall | No blocking required |
| Monitoring | Maintain standard logging |
| Whitelist Consideration | Valid infrastructure IP from established carrier |
The IP address represents legitimate telecommunications infrastructure from a Tier-1 ISP. No immediate threat action required. Standard network logging and monitoring practices are sufficient.
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END OF BRIEFING
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Telmex Chile S.A HFC |
| ASN | AS6535 |
| Network Name | 181.72.16.0 - 181.72.31.255 |
| CIDR Block | 181.72.16.0/20 |
| RIR | LACNIC |
| Country | CL |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR Record | No PTR |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
🔐 DNS Hygiene
| Hygiene Score | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🛡️ Public Network Snapshot
| Origin ASN | AS6535 |
| Network Prefix | 181.72.0.0/17 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 17% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 17% | 2 | 3 |
| reputation | 14% | 1 | 3 |
| geolocation | 17% | 2 | 3 |
| Overall | 14% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-17 23:21:45 UTC |
| Last Seen | 2026-08-31 16:58:05 UTC |
| Profile Built | 2026-08-31 16:58:24 UTC |
| Data Freshness | Live |
| Signal Types | 19 |
| Total Observations | 22 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 181.72.20.86
Who owns the IP address 181.72.20.86?
181.72.20.86 is registered to Telmex Chile S.A HFC. The address falls within the 181.72.16.0/20 network block. Registration is held at LACNIC.
Where is 181.72.20.86 located?
Geolocation data places 181.72.20.86 in Santiago, Santiago Metropolitan, Chile. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 181.72.20.86 malicious or safe?
181.72.20.86 currently carries a low risk assessment, meaning no significant threat indicators have been observed. This assessment is generated from continuously collected signals and can change over time.