52.123.251.181
52.123.251.181 is an IPv4 address operated by Microsoft Corporation (AS8075), geolocated to Boston, United States. It belongs to datacenter or hosting infrastructure. As of November 2, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.
The IP address 52.123.251.181/32 was assigned to Microsoft Corporation (ASN 8075, MSFT) within the US-MA region. The address operated as a CloudCompute Web Server, presenting open ports 80, 443, and 8443. TLS certificates validated for outlook.com were observed. The reputation risk score remained Low (25), yet the threat actor classification labeled the host as "Suspicious Host" with "Unknown Intent."
Network control plane data indicated the route was not stable, recording three changes over the previous 30 days. Geolocation data presented contradictions between claimed coordinates and RTT physics measurements, with sources disagreeing on country code (CA, US). The IP was listed on one of eight DNSBL lists. The associated /24 neighborhood contained 17 threat siblings out of 106 active siblings.
Based on signal contradictions and neighborhood analysis, the recommendation was to Monitor traffic with Low Severity. No specific known campaigns were attributed to this address during the observation window from 2026-09-27 to 2026-10-14.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Microsoft Corporation |
| ASN | AS8075 |
| Network Name | MSFT |
| CIDR Block | 52.120.0.0/14 |
| RIR | ARIN |
| Country | United States |
| 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 | 40% (Fair) |
| SPF | 5/10 domains |
| DMARC | 6/10 domains |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 10 domains |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Web Server |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| 8443 | https-alt | tcp | — |
| Closed Ports | 22, 25, 3389, 8080 (3 open / 7 scanned) | ||
| Server | Web server detected |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | outlook.com*.hotmail.com*.internal.outlook.com*.live.com*.office.com*.office365.com*.outlook.com*.outlook.office365.comattachment.outlook.live.netattachment.outlook.office.net |
| Valid From | 2026-06-26T00:00:00+00:00 |
| Valid Until | 2027-01-10T23:59:59+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha256RSA |
| Validity Period | 198 days |
🛡️ Public Network Snapshot
| Origin ASN | AS8075 |
| Network Prefix | 52.120.0.0/14 |
| Route mapping | Found |
| HSTS | Not detected |
| CSP | Not detected |
| HTTP/2 | Enabled |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 25% | 2 | 4 |
| routing | 17% | 2 | 3 |
| services | 25% | 2 | 5 |
| ownership | 17% | 2 | 3 |
| reputation | 16% | 1 | 3 |
| geolocation | 12% | 2 | 2 |
| Overall | 19% | 11 | 20 |
| Data Coherence | Mixed Signals (60%) — 2 contradiction(s) |
| Attribution | Very Low (20%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
⚠ Geo sources disagree on country: US, CA
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-27 23:51:18 UTC |
| Last Seen | 2026-11-02 22:41:02 UTC |
| Profile Built | 2026-11-02 22:48:16 UTC |
| Data Freshness | Live |
| Signal Types | 25 |
| Total Observations | 47 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 52.123.251.181
Who owns the IP address 52.123.251.181?
52.123.251.181 is registered to Microsoft Corporation. The address falls within the 52.120.0.0/14 network block. Registration is held at ARIN.
Where is 52.123.251.181 located?
Geolocation data places 52.123.251.181 in Boston, US-MA, United States. The local time zone is America/New_York. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 52.123.251.181 malicious or safe?
52.123.251.181 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 ports are open on 52.123.251.181?
Responsive ports observed on 52.123.251.181 include 80, 443, 8443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.
Is 52.123.251.181 a VPN, proxy, or data center address?
52.123.251.181 is classified as cloud infrastructure and hosting infrastructure based on network ownership and behavioural analysis.