64.31.36.88📋 Copy

# IP Intelligence Briefing: 64.31.36.88/32

## Executive Summary

IP address 64.31.36.88 was analyzed and classified as Low Risk with a risk score of 25. The address is owned by Limestone Networks, Inc. (ASN 46475) and operates within the 64.31.0.0/18 block. No active threat indicators, malicious activity, or service vulnerabilities were detected during the assessment.

## Ownership and Registration

The IP is registered to Limestone Networks, Inc. under the network name LIMESTONE-NETWORKS (CIDR: 64.31.0.0/18). Registration is maintained through the ARIN RIR with abuse contact available via RDAP. The ownership profile remained stable throughout the observation period with no ownership changes recorded.

## Geolocation Assessment

Geolocation data indicates placement in Portland, Oregon, US (coordinates: 39.83, -98.58). However, geolocation validation flagged an RTT discrepancy: observed RTT of 94ms was below the minimum possible 162ms for the reported distance of 8,097.8km, indicating geo-plausibility concerns. Multiple geolocation sources contributed to a consensus classification, though the geographic accuracy radius spans 2,500km.

## Network Classification

The IP is classified as firewalled with no active services. No open ports were detected. DNS resolution returned a reverse hostname (88-36-31-64.static.reverse.lstn.net) under the lstn.net domain. SPF records are present for email authentication, though DMARC configuration is absent.

## Threat Intelligence Indicators

• Risk Score: 25 (Low Risk)
• Abuse Confidence Score: Not applicable
• Blacklist Status: Clean (0 blacklist listings)
• Known Campaigns: None identified
• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No

The control plane analysis showed the IP is not a route origin for any prefix and demonstrated route stability over the 30-day period.

## Neighborhood Analysis

The /24 subnet (64.31.36.0/24) contains 11 sibling IPs with an abuse density of 0 (clean classification). Risk distribution across neighbors:

• High risk: 0
• Medium risk: 0
• Low risk: 10 (including the subject IP)

Notable neighbors include 64.31.36.164 (risk score 25) and 64.31.36.36, 64.31.36.217 (risk score 20), but the overall subnet threat profile remains benign.

## Historical Observations

Analysis of the past 20 observations indicates:

• Classification has remained consistently clean
• No threat persistence indicators detected
• Ownership changes: 0
• Threat observation count: 0
• The IP is not flagged as persistently malicious

Recent observations (as of 2026-07-27) confirm stable, low-risk behavior with no escalation in threat signals.

## Recommended Actions

Due to the low-risk classification and absence of actionable threat indicators, no specific firewall rules or blocking recommendations were generated. The IP presents no immediate threat to network security and may be permitted through standard ingress/egress policies.

## SOC Analyst Notes

This IP is part of Limestone Networks infrastructure (lstn.net reverse DNS). The geolocation discrepancy warrants periodic re-validation if used for geofencing decisions. No immediate blocking or monitoring is required, though the IP should be included in standard network traffic observation baselines.

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.