# 157.55.39.193 — IP Intelligence Summary

157.55.39.193 is an IPv4 address operated by Microsoft Corporation (AS8075), geolocated to Quincy, United States. Its reverse DNS name is msnbot-157-55-39-193.search.msn.com. As of October 9, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/157.55.39.193
- Last updated: 2026-10-09

## Ownership

- Organization: Microsoft Corporation
- Network name: MSFT-GFS
- Allocated block: 157.54.0.0/15
- ASN: AS8075 (https://ipdebrief.com/asn/8075)
- Regional registry: ARIN
- Cloud / hosting provider: Bingbot

## Location

- City: Quincy
- Region: WA
- Country: United States
- Time zone: America/Los_Angeles

## Network classification

- Infrastructure type: —
- Datacenter / hosting: no
- Residential: no
- Mobile: no
- Anycast: no
- Tor exit node: no
- VPN: no
- Proxy: no

## Risk assessment

- Assessment: Low Risk (25/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Reverse DNS

- msnbot-157-55-39-193.search.msn.com
- Forward-confirmed: yes

## Analyst narrative

**INTELLIGENCE BRIEFING: 157.55.39.193/32**

**Date:** Current Analysis Cycle

**Classification:** Low Risk / Legitimate Infrastructure

\---

\### EXECUTIVE SUMMARY

IP 157.55.39.193 is identified as Microsoft Bingbot search crawler infrastructure operating within Microsoft Azure Cloud. Risk score of 25 indicates low threat profile. No active malicious indicators detected. IP belongs to MSFT-GFS network block (157.54.0.0/15), registered to Microsoft Corporation (ASN 8075).

\### TECHNICAL PROFILE

| Attribute | Value |

|-----------|-------|

| **Risk Score** | 25 (Low Risk) |

| **Organization** | Microsoft Corporation |

| **ASN** | AS8075 |

| **Geolocation** | Quincy, WA, US |

| **Infrastructure** | Microsoft Azure CloudCompute |

| **DNS** | msnbot-157-55-39-193.search.msn.com |

| **Network Classification** | Cloud Provider / Search Bot |

| **Open Ports** | None detected |

\### THREAT INDICATORS

\- **Abuse Confidence Score:** Not applicable (legitimate infrastructure)

\- **Known Attacker:** False

\- **Spam Source:** False

\- **Tor Exit:** False

\- **Blacklist Count:** 1 of 8 DNSBL lists

\- **Threat Persistence:** 0 days observed

\- **Campaign Correlation:** None identified

\### NETWORK CONTEXT

**Subnet Analysis (157.55.39.0/24):**

\- **Total Siblings:** 39

\- **Abuse Density:** 0%

\- **Classification:** Mostly Clean

\- **Risk Distribution:** 0 High, 1 Medium, 37 Low

\- **Inherited Risk:** 4/100

**Related Entities:**

\- DNS: msnbot-157-55-39-193.search.msn.com

\- Network: MSFT-GFS (157.55.0.0/16)

\### OBSERVATION HISTORY

25 historical observations collected. Recent signals indicate:

\- Bingbot activity with 90% confidence

\- Microsoft Corporation attribution with 95% confidence

\- Cloud infrastructure classification consistent

\- One signal flagged with "has_threats: true" requiring monitoring

\### RECOMMENDED ACTIONS

No immediate blocking recommended. IP represents legitimate Microsoft search crawler infrastructure. Monitor for behavioral changes or anomalous traffic patterns.

**Action Priority:** Monitor

**Blocking Status:** Not Recommended

\---

**ANALYST NOTES:** IP shows consistent Microsoft Azure infrastructure characteristics with Bingbot search crawler behavior. Low-risk classification supported by organization attribution, geolocation consistency, and subnet cleanliness. No evidence of malicious activity or compromised infrastructure.

**End of Briefing**

## Nearby addresses

- 157.55.39.6 (https://ipdebrief.com/157.55.39.6)
- 157.55.39.7 (https://ipdebrief.com/157.55.39.7)
- 157.55.39.8 (https://ipdebrief.com/157.55.39.8)
- 157.55.39.9 (https://ipdebrief.com/157.55.39.9)
- 157.55.39.10 (https://ipdebrief.com/157.55.39.10)
- 157.55.39.11 (https://ipdebrief.com/157.55.39.11)
- 157.55.39.12 (https://ipdebrief.com/157.55.39.12)
- 157.55.39.13 (https://ipdebrief.com/157.55.39.13)
- 157.55.39.14 (https://ipdebrief.com/157.55.39.14)
- 157.55.39.15 (https://ipdebrief.com/157.55.39.15)
- 157.55.39.16 (https://ipdebrief.com/157.55.39.16)
- 157.55.39.48 (https://ipdebrief.com/157.55.39.48)

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Source: IPDebrief, "157.55.39.193 IP intelligence", https://ipdebrief.com/157.55.39.193, updated 2026-10-09. Assessments are probabilistic.