# 74.179.77.164 — IP Intelligence Summary

74.179.77.164 is an IPv4 address operated by MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US (AS8075), with approximate network location Quincy, 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/74.179.77.164
- Last updated: 2026-11-13

## Ownership

- Organization: Microsoft Corporation
- Network name: MSFT
- Allocated block: 74.176.0.0/14
- 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: Quincy
- Region: WA
- Country: United States
- Time zone: America/Los_Angeles

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

## Network classification

- Infrastructure type: —
- 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

- 443/tcp — https

## DNS posture

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

- caa: Not applicable (—)
- spf: Unknown / lookup inconclusive (backend.delivery.mp.microsoft.com, backend.fe3.delivery.mp.microsoft.com, delivery.mp.microsoft.com, fe3.delivery.mp.microsoft.com, fe6.delivery.mp.microsoft.com)
- dmarc: Unknown / lookup inconclusive (_dmarc.backend.delivery.mp.microsoft.com, _dmarc.backend.fe3.delivery.mp.microsoft.com, _dmarc.delivery.mp.microsoft.com, _dmarc.fe3.delivery.mp.microsoft.com, _dmarc.fe6.delivery.mp.microsoft.com)
- dnssec: Unknown / lookup inconclusive (164.77.179.74.in-addr.arpa)
- fcrDns: Unknown / lookup inconclusive

## TLS observations

- CN=*.delivery.mp.microsoft.com, OU=DSP, O=Microsoft, L=Redmond, S=WA, C=US; port unknown; target —; Historical certificate; current certificate unknown; valid until 2027-06-06T19:59:52.0000000+00:00

## Nearby addresses

- 74.179.77.204 (https://ipdebrief.com/74.179.77.204)

## Addresses sharing infrastructure

- 20.165.94.54 — Same TLS certificate (https://ipdebrief.com/20.165.94.54)
- 74.178.76.54 — Same TLS certificate (https://ipdebrief.com/74.178.76.54)
- 74.178.240.51 — Same TLS certificate (https://ipdebrief.com/74.178.240.51)
- 135.232.92.97 — Same TLS certificate (https://ipdebrief.com/135.232.92.97)
- 135.233.95.135 — Same TLS certificate (https://ipdebrief.com/135.233.95.135)

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Source: IPDebrief, "74.179.77.164 IP intelligence", https://ipdebrief.com/74.179.77.164, updated 2026-11-13. Assessments are probabilistic.