# 20.51.57.178 — IP Intelligence Summary

20.51.57.178 is an IPv4 address operated by MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US (AS8075), with approximate network location Cheyenne, 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/20.51.57.178
- Last updated: 2026-11-13

## Ownership

- Organization: Microsoft Corporation
- Network name: MSFT
- Allocated block: 20.33.0.0/16
- 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: Cheyenne
- Region: WY
- Country: United States
- Time zone: America/Denver

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 applicable (—)
- spf: Unknown / lookup inconclusive (api-df.live.com, api-df.live.net, api.live.com, api.live.net, docs-df.live.net, docs.live.net, l-df.live.net, l.live.net, skyapi.live.net, storage.live.com)
- dmarc: Unknown / lookup inconclusive (_dmarc.api-df.live.com, _dmarc.api-df.live.net, _dmarc.api.live.com, _dmarc.api.live.net, _dmarc.docs-df.live.net, _dmarc.docs.live.net, _dmarc.l-df.live.net, _dmarc.l.live.net, _dmarc.skyapi.live.net, _dmarc.storage.live.com)
- dnssec: Unknown / lookup inconclusive (178.57.51.20.in-addr.arpa)
- fcrDns: Unknown / lookup inconclusive

## TLS observations

- CN=storage.live.com, O=Microsoft Corporation, L=Redmond, S=WA, C=US; port unknown; target —; Historical certificate; current certificate unknown; valid until 2027-04-11T19:55:18.0000000+00:00

## Nearby addresses

- 20.51.57.112 (https://ipdebrief.com/20.51.57.112)
- 20.51.57.121 (https://ipdebrief.com/20.51.57.121)

## Addresses sharing infrastructure

- 4.255.203.141 — Same TLS certificate (https://ipdebrief.com/4.255.203.141)
- 4.255.241.58 — Same TLS certificate (https://ipdebrief.com/4.255.241.58)
- 13.105.74.61 — Same TLS certificate (https://ipdebrief.com/13.105.74.61)
- 20.135.4.163 — Same TLS certificate (https://ipdebrief.com/20.135.4.163)
- 20.135.4.169 — Same TLS certificate (https://ipdebrief.com/20.135.4.169)
- 20.135.4.173 — Same TLS certificate (https://ipdebrief.com/20.135.4.173)
- 20.135.6.7 — Same TLS certificate (https://ipdebrief.com/20.135.6.7)
- 20.135.6.11 — Same TLS certificate (https://ipdebrief.com/20.135.6.11)
- 20.245.250.193 — Same TLS certificate (https://ipdebrief.com/20.245.250.193)
- 40.90.130.193 — Same TLS certificate (https://ipdebrief.com/40.90.130.193)
- 52.225.51.39 — Same TLS certificate (https://ipdebrief.com/52.225.51.39)
- 64.236.59.233 — Same TLS certificate (https://ipdebrief.com/64.236.59.233)

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Source: IPDebrief, "20.51.57.178 IP intelligence", https://ipdebrief.com/20.51.57.178, updated 2026-11-13. Assessments are probabilistic.