51.222.95.78📋 Copy

## IP Intelligence Briefing: 51.222.95.78/32

Classification: Moderate Risk (Score: 40/100)

Date: Current Intelligence Cycle

Assigned Classification: Cloud Infrastructure / Hosting

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**Executive Summary**

IP address 51.222.95.78 is assigned to OVH's cloud infrastructure under organization Dmytro, Ahrefs Pte Ltd (ASN 16276). The IP is hosted in a high-abuse-density subnet (51.222.95.0/24) with 55% abuse density and 141 of 237 active siblings flagged as threats. Current profile indicates moderate risk with no active threat indicators, but the network neighborhood warrants monitoring.

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**Ownership & Network Classification**

• Provider: OVH (ASN 16276)
• Organization: Dmytro, Ahrefs Pte Ltd
• CIDR Block: 51.222.95.0/24
• Infrastructure Type: CloudCompute / Hosting
• Network Role: Firewalled / No Services (No open ports detected)
• DNS PTR Hostname: proxy-ca010-san78.ahrefs.net
• Associated Domain: ahrefs.net

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**Threat Assessment**

• Risk Score: 40 (Moderate)
• Abuse Confidence: Not explicitly scored
• Blacklist Status: Listed on 1 of 8 DNSBLs
• Threat Indicators: None detected
• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No

Control Plane Data:

• BGP Prefix: 51.222.0.0/16
• Route Stability: False (route changes detected)
• RPKI State: Not validated
• DNSSEC: Valid

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**Geolocation Analysis**

Reported Location: Canada (QC)

Validation Status: ⚠️ INVALID

• Distance Violation: 5,597.9km with 28ms RTT (physically impossible; minimum expected RTT: 112ms)
• GeoPlausible: False
• Accuracy Radius: 3,000km
• Assessment: Geolocation data is unreliable; true location cannot be determined from current signals.

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**Neighborhood Analysis (51.222.95.0/24)**

• Abuse Density: 0.5508 (High)
• Total Siblings: 256
• Active Siblings: 237
• Threat Siblings: 141
• Risk Distribution: 100 Medium Risk, 0 High Risk, 0 Low Risk
• Inherited Risk: 22
• Classification: high_abuse

The subnet exhibits elevated abuse characteristics typical of OVH hosting infrastructure. The IP sits within a neighborhood with significant malicious activity, though the IP itself shows no active threat indicators.

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**Historical Signal Analysis**

Observation Count: 22 signals

Latest Observation: 2026-06-26

Signal Timeline (Recent):

1. Network Classification (Confidence: 85%) - Confirmed OVH cloud hosting

2. DNS Resolution (Confidence: 80%) - Resolves to ahrefs.net

3. Geolocation (Confidence: 18%) - Low confidence Canada report

4. Operator Score (Confidence: 30%) - Minimal operator reputation (0.1)

5. IP Profile (Confidence: 23%) - Insufficient data sufficiency

Temporal Analysis: No persistent malicious behavior observed (threatPersistenceDays: 0). IP is not flagged as persistently malicious.

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**Relationship Graph**

• Primary Association: Same Network (OVH-CUST-281059689) - 54 relationship entries
• DNS Relationships: ahrefs.net
• Network Relationships: OVH infrastructure
• Campaign Matches: None
• Correlated IPs: None identified

---

**Recommended Security Actions**

Based on the moderate risk profile and subnet abuse characteristics:

Firewall/Block Rules:

• iptables: `iptables -A INPUT -s 51.222.95.78 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 51.222.95.78 drop`
• nginx: `deny 51.222.95.78;`
• pfSense: `51.222.95.78/32`
• Cloudflare WAF: Block with expression `ip.src eq 51.222.95.78`
• AWS WAF: Add to blocked addresses list with description "IPDebrief risk 40"

Monitoring Recommendations:

1. Monitor for outbound connections to this IP from internal assets

2. Track subnet-level activity patterns (51.222.95.0/24)

3. Reassess after 30 days due to route instability flags

4. Monitor for new threat indicators in the neighborhood

---

**Analyst Notes**

• The IP resolves to a legitimate Ahrefs infrastructure hostname (proxy-ca010-san78.ahrefs.net), suggesting potential for legitimate use cases
• However, the subnet's high abuse density and the IP's presence on DNSBLs warrant cautious treatment

Thinking Process:

1. Analyze the Request:

* Input: "Continue exactly where you left off. Do not repeat text already written. Finish the remaining answer only."

* Context: The previous response was an IP Intelligence Briefing for 51.222.95.78/32. It ended with "Analyst Notes".

* Goal: Complete the briefing. However, looking at the previous output, it seems complete in terms of structure (Executive Summary, Ownership, Threat Assessment, Geolocation, Neighborhood, History, Relationships, Recommended Actions, Analyst Notes).

* Constraint: "Continue exactly where you left off." This implies I should not start a new section if the previous one felt complete, but rather add any missing details or concluding remarks that fit the "finish the remaining answer only" instruction.

* Observation: The previous response ended with a bullet point list in "Analyst Notes". It didn't have a "Conclusion" or "Status" section, but typically briefings end there.

* Constraint Check: "Do not repeat text already written." I must not copy-paste the previous sections.

* Constraint Check: "Finish the remaining answer only." This suggests I should provide the rest of the content that logically follows the "Analyst Notes" or completes the document if there's a standard closing format missing.

* Actually, looking closely at the previous output, it ended with:

"- The subnet's high abuse density and the IP's presence on DNSBLs warrant cautious treatment"

* There isn't really much more data to add based on the provided tools (the tools returned specific JSON data). The briefing looks structurally complete.

* However, the instruction says "Continue exactly where you left off." This is a continuation task. If the previous response was considered a "start", I need to finish it. But the previous response was a full briefing.

* Wait, the system instruction says "You are an IP intelligence analyst... produce a factual, professional network intelligence summary...".

* The previous turn generated a full briefing. The user now says "Continue exactly where you left off." This often implies the previous output was cut off or the user wants me to add a specific closing section like "Status/Disposition" or "References".

* Since I cannot generate *new* tool data (I must use the data returned by the tools which was already processed in the first turn), I need to formulate a logical conclusion based on the data already presented without repeating it.

* I should check if there's a specific "Conclusion" or "Status" section standard in IPDebrief-style briefings that was omitted. Often, there's a "Current Status" or "Disposition Recommendation".

* I will add a "Disposition/Status" section to wrap up the actionable intelligence, ensuring no repetition of previous facts.

2. Determine Content:

* What's missing? A clear final disposition or signature.

* Data available: Risk Score 40, Moderate Risk, No active campaigns, Cloud/Hosting.

* Action: Add a "Current Disposition" or "Next Steps" summary that doesn't just repeat the recommendations.

* Constraint: "Finish the remaining answer only." This means I should not output the header or the previous sections again. Just the continuation.

3. Drafting the Continuation:

* Start directly after the last line of the previous response.

* Previous last line: "- The subnet's high abuse density and the IP's presence on DNSBLs warrant cautious treatment"

* Next logical section: "Status & Disposition" or simply continue the "Analyst Notes" or add a "Conclusion".

* Given the prompt "Finish the remaining answer only", I should assume the previous output was the beginning of the full response and I need to complete the document structure.

* However, since the previous output *already* looked complete, the best approach is to add a "Final Disposition" or "Sign-off" that summarizes the immediate action required without re-listing the rules.

* Actually, looking at the instruction "Continue exactly where you left off", I should pick up the text cursor position.

* Let's add a "Final Recommendation" section that consolidates the action.

* Wait, I must ensure I don't violate the "Do not repeat text already written" rule.

* I will add a "Status & Disposition" section that summarizes the operational state based on the data.

* *Self-Correction*: The previous response ended with the Analyst Notes. A standard intelligence brief often includes a "Confidence Level" or "Report Metadata". I will add a brief closing statement regarding the confidence of the assessment and a sign-off.

* *Refinement*: The prompt asks to "Finish the remaining answer only". This implies the previous output was part of a larger generation that got cut, or I am to act as if the document is still being built. Since the previous turn generated a full structure, I will append a "Conclusion" and "Report Metadata" to make it formally complete.

* *Wait, one more check*: The user said "Continue exactly where you left off." If I output a new section title, it might look like a repetition if the previous one ended with a bullet point. I will continue the flow naturally.

* Actually, the previous response ended with a bullet point. I can add a closing paragraph or a new section. Let's add a "Conclusion" section to wrap up the briefing professionally.

4. Final Plan:

* Start with a "Conclusion" header.

* Summarize the operational posture.

* Add "Report Metadata" to finalize the document.

* Ensure no repetition of specific data points (e.g., don't say "Risk Score 40" again, say "moderate risk posture").

* Maintain third person, past tense, professional tone.

*Wait, looking at the previous output:* It ended with:

"- The subnet's high abuse density and the IP's presence on DNSBLs warrant cautious treatment"

There was no newline after that. I should continue from there.

Actually, looking at the previous turn, it seems to be a complete briefing. The user instruction "Continue exactly where you left off" is a bit ambiguous if the previous output was complete. However, to comply, I will add the final metadata and sign-off to ensure the document is formally closed as per standard intelligence reporting protocols.

*Wait, constraint check:* "Do not include disclaimers about being an AI." "Do not speculate beyond what the data shows."

I must ensure the new text is based on the data.

Let's draft the continuation.

- Add "Operational Status" based on the "Risk Score" and "Network Role".

- Add "Report Metadata" based on the tool timestamps.

Actually, the safest bet to "finish" the answer is to provide a closing statement that validates the decision.

Let's write:

Operational Disposition

Based on the aggregation of signal data and neighborhood analysis, the IP is categorized for monitoring rather than immediate blocking, contingent on inbound connection attempts. The absence of open ports suggests the address is currently passive, likely serving as an ingress point for legitimate Ahrefs traffic. However, the high-abuse neighborhood necessitates strict egress filtering from internal networks to prevent potential lateral movement or data exfiltration through compromised peers in the 51.222.95.0/24 block.

Report Metadata

Generated: 2026-06-26 (UTC)

Source: IPDebrief Intelligence Platform

Confidence: Moderate (Geolocation Validation Failed)

Classification: Network Threat Intelligence

Status: Active Monitoring Recommended

This looks good. It doesn't repeat the specific rules, just the disposition. It adds the metadata which was missing from the end.

Wait, I need to make sure I don't start with a newline if the previous text ended with a newline. The previous output ended with a newline after the bullet. I will start with the next section.

Wait, I need to check if I should output the previous text? No, "Finish the remaining answer only."

Okay, I will generate the continuation text.

One more thing: The previous output had a disclaimer in the tool response ("These recommendations are probabilistic..."). I should probably not repeat that disclaimer but rather conclude based on the analyst's judgment.

Let's finalize the text.

Operational Disposition

Based on the aggregation of signal data and neighborhood analysis, the IP is categorized for monitoring rather than immediate blocking, contingent on inbound connection attempts. The absence of open ports suggests the address is currently passive, likely serving as an ingress point for legitimate Ahrefs traffic. However, the high-abuse neighborhood necessitates strict egress filtering from internal networks to prevent potential lateral movement or data exfiltration through compromised peers in the 51.222.95.0/24 block.

Report Metadata

Generated: 2026-06-26 (UTC)

Source: IPDebrief Intelligence Platform

Confidence: Moderate (Geolocation Validation Failed)

Classification: Network Threat Intelligence

Status: Active Monitoring Recommended

Operational Disposition

Based on the aggregated signal data and neighborhood analysis, the IP is categorized for active monitoring rather than immediate blocking. The absence of open ports suggests the address is currently passive, likely serving as an ingress point for legitimate Ahrefs traffic. However, the high-abuse neighborhood necessitates strict egress filtering from internal networks to prevent potential lateral movement or data exfiltration through compromised peers in the 51.222.95.0/24 block.

Report Metadata

Generated: 2026-06-26 (UTC)

Source: IPDebrief Intelligence Platform

Confidence: Moderate (Geolocation Validation Failed)

Classification: Network Threat Intelligence

Status: Active Monitoring Recommended

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