120.157.39.16
IP Intelligence Briefing: 120.157.39.16/32
Date: 2026-06-07
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**1. Risk Profile**
- Overall Risk Score: 80 (High Risk)
- Provider: Telstra Internet Address Registry (AS1221, Australia)
- Geolocation: Melbourne, Victoria, Australia (Latitude: -37.82, Longitude: 144.97)
- Network Role: Mobile Carrier (Telstra) – LTE/5G technology, no public services.
- Threat Indicators: No direct malicious indicators (no spam, malware, or known attacker associations).
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**2. Observation History**
- Recent Activity:
- Listed in 8 DNSBLs (high severity, likely spam or abuse).
- DNSSEC validation confirmed (no vulnerabilities).
- BGP prefix 120.156.0.0/15 associated with Telstra.
- No persistent threat observations or ownership changes.
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**3. Relationships**
- Network Affiliation:
- Part of Telstra’s TELSTRAINTERNET47-AU network (AS1221).
- Linked Entities:
- No direct hostname or certificate associations.
- No correlated IPs or campaigns detected.
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**4. Neighborhood Analysis**
- Subnet: 120.157.39.16/24
- Neighbor Risk:
- 120.157.39.170 (risk score: 65, moderate risk).
- Abuse Density: Low (0% abuse in subnet).
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**5. Actionable Insights**
- SOC Recommendations:
- Monitor DNSBL listings and correlate with Telstra’s network for potential abuse.
- Block or restrict traffic from 120.157.39.170 due to its moderate risk profile.
- Verify if the IP is part of a larger mobile carrier attack pattern (e.g., SIM swapping, SMS fraud).
- Context: Telstra’s network is generally trusted, but DNSBL associations suggest potential misuse. Prioritize investigation into the neighbor IP and DNSSEC validation anomalies.
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End of Briefing
*Generated via IPDebrief threat intelligence tools.*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Telstra Internet Address Registry |
| ASN | AS1221 |
| Network Name | TELSTRAINTERNET47-AU |
| CIDR Block | 120.144.0.0/12 |
| RIR | APNIC |
| Country | AU |
| 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 | Mobile |
| 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 | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 13% | 1 | 1 |
| routing | 13% | 1 | 1 |
| services | 13% | 1 | 1 |
| ownership | 32% | 2 | 3 |
| reputation | 0% | 0 | 0 |
| geolocation | 13% | 1 | 1 |
| Overall | 14% | 6 | 7 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-16 02:53:59 UTC |
| Last Seen | 2026-06-07 18:36:08 UTC |
| Profile Built | 2026-06-07 19:02:16 UTC |
| Data Freshness | Live |
| Signal Types | 15 |
| Total Observations | 15 |
Full dossier details are available via our API.