129.121.100.45📋 Copy

# IP Intelligence Briefing: 129.121.100.45/32

Date: July 29, 2026

IP Address: 129.121.100.45

Risk Assessment: Moderate Risk (Score: 40/100)

---

## Executive Summary

IP address 129.121.100.45 is registered to Oso Grande IP Services, LLC (ASN 31898) and operates from Ashburn, Virginia, US. The IP shows moderate risk characteristics with minimal operational indicators of malicious activity. No active threat campaigns or known attacker signatures detected. The IP is classified as "Firewalled / No Services" with no open ports observed.

---

## Network Ownership & Classification

• Organization: Oso Grande IP Services, LLC
• Netname: OGTIPS1-129-121
• CIDR Block: 129.121.0.0/16
• ASN: 31898
• RIR: ARIN
• Geolocation: US (Virginia/Ashburn)

## Technical Profile

• Network Role: Firewalled / No Services
• Open Ports: None detected
• DNS Status: PTR hostname resolves to server-792474.isufst-projecthusay.com; forward resolution not confirmed
• Email Authentication: No SPF or DMARC records configured
• HTTP Services: No TLS certificates or HTTP banners detected
• Routing: BGP prefix 129.121.96.0/21; route stability flagged as false; DNSSEC valid

---

## Threat Indicators

• Abuse Confidence Score: Not available
• Blacklist Count: 0
• DNSBL Lists: 2 of 8 total (minimal listing)
• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No
• Active Threat Campaigns: None identified

## Control Plane Analysis

• Operator Score: 0.1304 (Minimal)
• Route Changes (30d): 0
• IS Route Stable: No
• IS MOAS: No
• ISP Classification: Provider network

---

## Historical Observations

Signal history shows 16 observations recorded. Recent activity includes:

• Ownership data consistently attributed to Oso Grande IP Services, LLC
• Geolocation data from multiple sources (country-level consensus)
• No persistent malicious behavior detected
• Threat observation count: 0
• No ownership changes observed

---

## Related Entities

DNS Associations

• server-792474.isufst-projecthusay.com (PTR/Forward resolution)

Network Relationships

• Same network: OGTIPS1-129-121 (multiple associations)

Neighborhood Analysis (129.121.100.0/24)

• Subnet abuse density: 0
• Total siblings: 1
• Threat siblings: 0
• Notable neighbor: 129.121.100.200 (Risk Score: 25, Authority Score: 50)

---

## Recommended Security Actions

Based on the moderate risk profile (Score: 40), the following rules are recommended:

Firewall/IPS Rules:

```bash

iptables -A INPUT -s 129.121.100.45 -j DROP

nft add rule inet filter input ip saddr 129.121.100.45 drop

```

WAF/Cloud Rules:

• Cloudflare WAF: Block IP with expression `ip.src eq 129.121.100.45`
• AWS WAF: Add IP 129.121.100.45/32 to deny list

Note: These recommendations are probabilistic and should be validated against other threat intelligence signals before deployment.

---

## Assessment Summary

The IP presents moderate risk with no current evidence of active malicious activity. The moderate risk score (40) combined with minimal operator score and lack of blacklist presence suggests the IP may be used for legitimate purposes but warrants monitoring. No immediate blocking is required, but the IP should be added to monitoring lists and observed for behavioral changes. The DNS hostname pattern and lack of confirmed forward resolution suggest potential infrastructure that may be firewalled or non-public facing.

Recommendation: Monitor for service activation, DNS activity, or behavioral changes. Consider blocking if additional threat signals emerge.

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