157.55.39.60
157.55.39.60 is an IPv4 address operated by Microsoft Corporation (AS8075), geolocated to Quincy, United States. Its reverse DNS name is msnbot-157-55-39-60.search.msn.com. As of October 9, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.
IP INTELLIGENCE BRIEFING: 157.55.39.60/32
Classification: LOW RISK — LEGITIMATE INFRASTRUCTURE
Date: Intelligence generated from current network observations
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EXECUTIVE SUMMARY
IP 157.55.39.60 is identified as a Microsoft Corporation (AS8075) infrastructure address operating within Microsoft Azure cloud environment. The IP resolves to MSN search bot infrastructure (msnbot-157-55-39-60.search.msn.com) and exhibits consistent low-risk characteristics with no active threat indicators. The address is part of a Microsoft-managed /24 subnet with minimal abuse density.
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NETWORK OWNERSHIP & CLASSIFICATION
| Attribute | Value |
|---|---|
| Organization | Microsoft Corporation |
| ASN | 8075 (MSFT-GFS) |
| CIDR Block | 157.54.0.0/15 |
| Infrastructure Type | CloudCompute (Microsoft Azure) |
| Location | Quincy, WA, US |
| Risk Score | 25 (Low Risk) |
| Provider Score | 0 |
Network Role: Cloud infrastructure with firewalled/no active services. No open ports detected on probe.
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THREAT INTELLIGENCE ASSESSMENT
Active Threat Indicators: None detected
- Known Attacker: No
- Spam Source: No
- Tor Exit Node: No
- Blacklist Status: Listed on 1 of 8 DNSBL providers (minor listing, likely false positive for cloud infrastructure)
- Threat Campaigns: No associations found
- Operator Score: 0.087 (Minimal)
DNS Reputation: Forward resolution confirmed to `msnbot-157-55-39-60.search.msn.com`. Email authentication (SPF/DMARC) records present.
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SUBNET CONTEXT (157.55.39.0/24)
Abuse Density: 0.1026 (Low/Mostly Clean)
- Total Sibling IPs: 39
- Active Siblings: 38
- Threat Siblings: 4
- Risk Distribution: 0 High, 1 Medium, 37 Low
Notable Neighbor: 157.55.39.223 shows elevated risk score (50) — potential outlier requiring independent assessment.
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OBSERVATION HISTORY
- Total Observations: 25 signals recorded
- Recent Activity: Signals observed as recent as 2026-08-11 (MSN crawler activity)
- Threat Persistence: No persistent malicious behavior detected
- Geoconsistency: Location signals consistently resolve to Quincy, WA region
- Stability: Ownership stable with no recent changes
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RELATIONSHIP MAPPING
- DNS Associations: Multiple entries pointing to `msnbot-157-55-39-60.search.msn.com` (MSN Bing search bot infrastructure)
- Network Relationships: Confirmed within MSFT-GFS network block
- No Correlated Hostnames/Organizations: Beyond Microsoft infrastructure
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RECOMMENDATIONS
1. Allow Traffic: This IP is legitimate Microsoft search crawler infrastructure. No blocking required.
2. Monitor Neighbor 157.55.39.223: Elevated risk score (50) in adjacent subnet may warrant independent investigation.
3. DNSBL Listing: Single DNSBL listing likely related to cloud infrastructure patterns; no action required.
4. Baseline Established: Risk profile stable. No escalation recommended.
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END OF BRIEFING
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 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 |
🌐 DNS Intelligence
| PTR | msnbot-157-55-39-60.search.msn.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | msnbot-157-55-39-60.search.msn.com |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | 2/2 domains |
| DMARC | 2/2 domains |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Present |
| Domains Checked | 2 domains |
☁️ 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 | AS8075 |
| Network Prefix | 157.55.0.0/16 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 26% | 2 | 4 |
| routing | 24% | 2 | 3 |
| services | 12% | 2 | 2 |
| ownership | 17% | 2 | 3 |
| reputation | 23% | 1 | 3 |
| geolocation | 24% | 2 | 3 |
| Overall | 21% | 11 | 18 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-02 04:21:05 UTC |
| Last Seen | 2026-10-09 12:36:46 UTC |
| Profile Built | 2026-10-09 12:38:54 UTC |
| Data Freshness | Live |
| Signal Types | 26 |
| Total Observations | 28 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 157.55.39.60
Who owns the IP address 157.55.39.60?
157.55.39.60 is registered to Microsoft Corporation. The address falls within the 157.54.0.0/15 network block. Registration is held at ARIN.
Where is 157.55.39.60 located?
Geolocation data places 157.55.39.60 in Quincy, WA, United States. The local time zone is America/Los_Angeles. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 157.55.39.60 malicious or safe?
157.55.39.60 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.
What is the hostname for 157.55.39.60?
The reverse DNS (PTR) record for 157.55.39.60 is msnbot-157-55-39-60.search.msn.com. This hostname is forward-confirmed, meaning it resolves back to the same address.