152.252.52.153
IP Intelligence Briefing: 152.252.52.153
Date: June 2, 2026
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership: Assigned to TELEFÔNICA BRASIL S.A (ASN 10429, ARIN registry).
- Geolocation: Brazil (SP, São Bernardo do Campo), inferred with moderate confidence (0.52).
- Network Role: Firewalled / No Services (no open ports, no TLS/HTTP activity).
- Threat Indicators: No malicious campaigns, blacklists, or known attacker associations.
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**2. Observational History**
- Latest Signals (June 2, 2026):
- Geolocation: Confirmed as São Bernardo do Campo, Brazil (2500km accuracy radius).
- Network Stability: Route stability score 0.13 (Minimal risk), no recent route changes.
- DNS: Resolves to `152-252-52-153.user.vivozap.com.br` (Vivozap, a Brazilian telecom service).
- Routing: BGP prefix `152.252.0.0/17` with no anomalies detected.
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**3. Relationships & Context**
- Network Connections:
- Linked to network 340987 (TELEFÔNICA BRASIL S.A).
- DNS association with `152-252-52-153.user.vivozap.com.br` (potential internal/managed service).
- Subnet Analysis:
- Subnet `152.252.52.153/24` has 0 active neighbors and abuse density 0 (mostly clean).
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**4. Actionable Insights**
- Monitor DNS: Investigate the `vivozap.com.br` hostname for potential phishing or credential stuffing risks.
- Network Segmentation: Confirm if the IP’s firewalled state is intentional (e.g., internal infrastructure).
- Geolocation Verification: Cross-check with internal geolocation tools due to moderate confidence in inferred location.
- Neighbor Subnet: The lack of active neighbors in the subnet may indicate a small-scale or static network.
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**5. Recommendations**
- No immediate blocking required due to low risk, but monitor DNS and network behavior for anomalies.
- Validate ownership with TELEFÔNICA BRASIL S.A if the IP is part of a known service.
- Track subnet activity for future changes in abuse density or neighbor activity.
End of Briefing
*Generated by IPDebrief Intelligence Platform*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | TELEFÔNICA BRASIL S.A |
| ASN | AS10429 |
| Network Name | 340987 |
| CIDR Block | 152.252.0.0/15 |
| RIR | ARIN |
| Country | BR |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | 152-252-52-153.user.vivozap.com.br |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | 152-252-52-153.user.vivozap.com.br |
🔐 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 | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 43% | 2 | 5 |
| routing | 13% | 1 | 1 |
| services | 18% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 26% | 1 | 4 |
| geolocation | 21% | 2 | 2 |
| Overall | 23% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:03:47 UTC |
| Last Seen | 2026-06-22 17:47:08 UTC |
| Profile Built | 2026-06-22 17:51:15 UTC |
| Data Freshness | Live |
| Signal Types | 19 |
| Total Observations | 21 |
Full dossier details are available via our API.