# 138.91.182.224 — IP Intelligence Summary

138.91.182.224 is an IPv4 address operated by MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US (AS8075), with approximate network location San Jose, 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/138.91.182.224
- Last updated: 2026-11-13

## Ownership

- Organization: Microsoft Corp
- Network name: MICROSOFT
- Allocated block: 138.91.0.0/16
- ASN: AS8075 (https://ipdebrief.com/asn/8075)
- Regional registry: ARIN
- Registered holder: Microsoft Corp
- 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: San Jose
- Region: CA
- Country: United States
- Time zone: America/Los_Angeles

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=*.actions.githubusercontent.com; port unknown; target —; Historical certificate; current certificate unknown; valid until 2026-12-07T23:12:46.0000000+00:00

## Addresses sharing infrastructure

- 4.225.11.192 — Same TLS certificate (https://ipdebrief.com/4.225.11.192)
- 4.228.31.153 — Same TLS certificate (https://ipdebrief.com/4.228.31.153)
- 4.237.22.41 — Same TLS certificate (https://ipdebrief.com/4.237.22.41)
- 4.249.131.160 — Same TLS certificate (https://ipdebrief.com/4.249.131.160)
- 20.85.130.105 — Same TLS certificate (https://ipdebrief.com/20.85.130.105)
- 20.199.39.224 — Same TLS certificate (https://ipdebrief.com/20.199.39.224)
- 52.140.63.241 — Same TLS certificate (https://ipdebrief.com/52.140.63.241)
- 52.175.140.176 — Same TLS certificate (https://ipdebrief.com/52.175.140.176)
- 140.82.112.21 — Same TLS certificate (https://ipdebrief.com/140.82.112.21)
- 140.82.112.22 — Same TLS certificate (https://ipdebrief.com/140.82.112.22)
- 140.82.113.21 — Same TLS certificate (https://ipdebrief.com/140.82.113.21)
- 140.82.113.22 — Same TLS certificate (https://ipdebrief.com/140.82.113.22)

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Source: IPDebrief, "138.91.182.224 IP intelligence", https://ipdebrief.com/138.91.182.224, updated 2026-11-13. Assessments are probabilistic.