157.55.39.15
157.55.39.15 is an IPv4 address operated by Microsoft Corporation (AS8075), geolocated to Madison, United States. It belongs to datacenter or hosting infrastructure with reverse DNS name msnbot-157-55-39-15.search.msn.com. As of October 11, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.
🏢 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-157-55-39-15.search.msn.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | msnbot-157-55-39-15.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 | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 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 | 27% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 19% | 2 | 2 |
| ownership | 20% | 2 | 3 |
| reputation | 22% | 1 | 3 |
| geolocation | 27% | 2 | 3 |
| Overall | 21% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-16 04:31:15 UTC |
| Last Seen | 2026-10-11 02:35:18 UTC |
| Profile Built | 2026-10-11 02:36:14 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 28 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 157.55.39.15
Who owns the IP address 157.55.39.15?
157.55.39.15 is registered to Microsoft Corporation. The address falls within the 157.54.0.0/15 network block. Registration is held at ARIN.
Where is 157.55.39.15 located?
Geolocation data places 157.55.39.15 in Madison, WI, United States. The local time zone is America/Chicago. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 157.55.39.15 malicious or safe?
157.55.39.15 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 157.55.39.15?
The reverse DNS (PTR) record for 157.55.39.15 is msnbot-157-55-39-15.search.msn.com. This hostname is forward-confirmed, meaning it resolves back to the same address.
Is 157.55.39.15 a VPN, proxy, or data center address?
157.55.39.15 is classified as cloud infrastructure and hosting infrastructure based on network ownership and behavioural analysis.