IP Intelligence Briefing: 157.55.39.53
*Generated from IPDebrief analytics*
1. Core Profile
- Risk Score: 25 (Low Risk)
- Ownership: Microsoft Corporation (AS8075, MSFT-GFS)
- Geolocation: Quincy, WA, USA (47.23°N, -119.85°W)
- Network Role: Microsoft Azure cloud compute instance (firewalled, no public services)
- Threat Status: No indicators of malicious activity, spam, or attacker campaigns
2. Historical Observations
- Scan Activity: Detected in June 2026 with port scanning (no open ports identified).
- Geolocation Consistency: Stable location inferred via multi-signal analysis (accuracy ±150km).
- Ownership Stability: No changes in ownership or network configuration.
- Threat Signals: No abuse confidence scores or DNSBL listings.
3. Network Relationships
- Linked Entities:
- Subnet: `MSFT-GFS` (Microsoft's Azure infrastructure)
- DNS: `msnbot-157-55-39-53.search.msn.com` (Microsoft botnet hostname)
- Network Classification: CloudCompute (no CDN, VPN, or proxy traffic).
4. Subnet Analysis
- Subnet: `157.55.39.0/24`
- Abuse Density: 35% (moderate risk, 7/20 siblings flagged as high/medium risk).
- Notable Neighbors:
- `157.55.39.54` (no risk score), `157.55.39.195` (low risk), `157.55.39.197` (medium risk).
- Risk Inheritance: Subnet carries inherited risk (14/100), likely due to mixed-use infrastructure.
5. Actionable Insights
- SOC Recommendation:
- Monitor subnet for unusual traffic patterns, as 35% of neighbors show moderate risk.
- Verify DNS resolution for `msnbot-*` hostnames to confirm expected botnet activity.
- Ensure cloud instance access controls align with Microsoft Azure security best practices.
- Threat Context: No evidence of active exploitation, but subnet-level risk warrants periodic reassessment.
*End of Briefing*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
π’ Ownership & Registration
| Organization | Microsoft Corporation |
| ASN | AS8075 |
| Network Name | MSFT-GFS |
| CIDR Block | 157.54.0.0/15 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
π DNS Intelligence
| PTR | msnbot-157-55-39-53.search.msn.com |
| Forward Confirmed | Yes β FCrDNS verified |
| Forward Hostnames | msnbot-157-55-39-53.search.msn.com |
π DNS Hygiene
| Hygiene Score | 100% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Present |
βοΈ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Tier 3 β Basic operator with some routing infrastructure |
π 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 | β |
| HTTP Title | β |
π TLS Certificate
| SANs | None |
| Valid From | β |
| Valid Until | β |
π― Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 27% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 19% | 2 | 2 |
| ownership | 27% | 2 | 3 |
| reputation | 13% | 1 | 2 |
| geolocation | 27% | 2 | 3 |
| Overall | 21% | 10 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
π Observation Timeline π Live
| First Seen | 2026-05-30 10:58:12 UTC |
| Last Seen | 2026-06-29 07:30:46 UTC |
| Profile Built | 2026-06-29 07:34:34 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 23 |
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