# 52.159.91.14 — IP Intelligence Summary

52.159.91.14 is an IPv4 address operated by MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US (AS8075), with approximate network location Chicago, United States. It belongs to datacenter or hosting infrastructure. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/52.159.91.14
- Last updated: 2026-11-13

## Ownership

- Organization: Microsoft Corporation
- Network name: MSFT
- Allocated block: 52.145.0.0/16
- ASN: AS8075 (https://ipdebrief.com/asn/8075)
- Regional registry: ARIN
- Registered holder: Microsoft Corporation
- Routing operator: MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US
- Network registration country: United States
- Registrant address country: —
- Cloud / hosting provider: Microsoft Azure

## Location

- City: Chicago
- Region: IL
- Country: United States
- Time zone: America/Chicago

Approximate network location; registration and certificate addresses are not server-location evidence.

## Network classification

- Infrastructure type: CloudCompute
- Datacenter / hosting: yes
- Residential: no
- Mobile: no
- Anycast: Unverified (not proof of unicast)
- Tor exit node: no
- VPN: no
- Proxy: no

## Risk assessment

- Assessment: Low Risk (0/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Exposed services

- 80/tcp — http
- 443/tcp — https

## DNS posture

Mail authentication and CAA are optional domain policies, not IP-wide requirements.

- caa: Not checked
- spf: Not checked
- dmarc: Not checked
- dnssec: Not checked
- fcrDns: Not checked

## TLS observations

- CN=*.nuget-prod-usnc-azuresearch-ase-env.p.azurewebsites.net, O=Microsoft Corporation, L=Redmond, S=WA, C=US; port unknown; target —; Historical certificate; current certificate unknown; valid until 2027-01-21T14:21:14.0000000+00:00

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Source: IPDebrief, "52.159.91.14 IP intelligence", https://ipdebrief.com/52.159.91.14, updated 2026-11-13. Assessments are probabilistic.