# 157.55.39.60 — IP Intelligence Summary

157.55.39.60 is an IPv4 address operated by Microsoft Corporation (AS8075), geolocated to Quincy, United States. Its reverse DNS name is msnbot-157-55-39-60.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/157.55.39.60
- 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-157-55-39-60.search.msn.com
- Forward-confirmed: yes

## Analyst narrative

**IP INTELLIGENCE BRIEFING: 157.55.39.60/32**

**Classification:** LOW RISK — LEGITIMATE INFRASTRUCTURE

**Date:** Intelligence generated from current network observations

\---

\### EXECUTIVE SUMMARY

IP 157.55.39.60 is identified as a Microsoft Corporation (AS8075) infrastructure address operating within Microsoft Azure cloud environment. The IP resolves to MSN search bot infrastructure (msnbot-157-55-39-60.search.msn.com) and exhibits consistent low-risk characteristics with no active threat indicators. The address is part of a Microsoft-managed /24 subnet with minimal abuse density.

\---

\### NETWORK OWNERSHIP & CLASSIFICATION

| Attribute | Value |

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

| Organization | Microsoft Corporation |

| ASN | 8075 (MSFT-GFS) |

| CIDR Block | 157.54.0.0/15 |

| Infrastructure Type | CloudCompute (Microsoft Azure) |

| Location | Quincy, WA, US |

| Risk Score | 25 (Low Risk) |

| Provider Score | 0 |

**Network Role:** Cloud infrastructure with firewalled/no active services. No open ports detected on probe.

\---

\### THREAT INTELLIGENCE ASSESSMENT

**Active Threat Indicators:** None detected

\- **Known Attacker:** No

\- **Spam Source:** No

\- **Tor Exit Node:** No

\- **Blacklist Status:** Listed on 1 of 8 DNSBL providers (minor listing, likely false positive for cloud infrastructure)

\- **Threat Campaigns:** No associations found

\- **Operator Score:** 0.087 (Minimal)

**DNS Reputation:** Forward resolution confirmed to \`msnbot-157-55-39-60.search.msn.com\`. Email authentication (SPF/DMARC) records present.

\---

\### SUBNET CONTEXT (157.55.39.0/24)

**Abuse Density:** 0.1026 (Low/Mostly Clean)

\- **Total Sibling IPs:** 39

\- **Active Siblings:** 38

\- **Threat Siblings:** 4

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

**Notable Neighbor:** 157.55.39.223 shows elevated risk score (50) — potential outlier requiring independent assessment.

\---

\### OBSERVATION HISTORY

\- **Total Observations:** 25 signals recorded

\- **Recent Activity:** Signals observed as recent as 2026-08-11 (MSN crawler activity)

\- **Threat Persistence:** No persistent malicious behavior detected

\- **Geoconsistency:** Location signals consistently resolve to Quincy, WA region

\- **Stability:** Ownership stable with no recent changes

\---

\### RELATIONSHIP MAPPING

\- **DNS Associations:** Multiple entries pointing to \`msnbot-157-55-39-60.search.msn.com\` (MSN Bing search bot infrastructure)

\- **Network Relationships:** Confirmed within MSFT-GFS network block

\- **No Correlated Hostnames/Organizations:** Beyond Microsoft infrastructure

\---

\### RECOMMENDATIONS

1. **Allow Traffic:** This IP is legitimate Microsoft search crawler infrastructure. No blocking required.

2. **Monitor Neighbor 157.55.39.223:** Elevated risk score (50) in adjacent subnet may warrant independent investigation.

3. **DNSBL Listing:** Single DNSBL listing likely related to cloud infrastructure patterns; no action required.

4. **Baseline Established:** Risk profile stable. No escalation recommended.

\---

**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)

---

Source: IPDebrief, "157.55.39.60 IP intelligence", https://ipdebrief.com/157.55.39.60, updated 2026-10-09. Assessments are probabilistic.