3.171.131.205
Intelligence Briefing: 3.171.131.205/32
The address was identified as part of the AMAZON-CF network under Amazon.com, Inc. (ASN 16509), operating within the 3.168.0.0/14 CIDR block. Ownership records confirmed the infrastructure role as a Web Server provided by Amazon Web Services. DNS resolution resolved to cloudfront.net with valid SPF and DMARC authentication records.
Security assessments classified the reputation as Low Risk with a risk score of 20. No malicious indicators were detected, including zero blacklist entries, no known campaign associations, and no abuse confidence scores. The neighborhood classification remained clean with zero threat siblings and minimal abuse density. Service scans revealed standard web server ports 80 and 443, secured by an Amazon RSA 2048 M04 TLS certificate for *.cloudfront.net.
Minor signal contradictions were observed, specifically a discrepancy between claimed geolocation data and RTT physics measurements for the US region. Due to these contradictions, the analysis recommended monitoring the address with low severity. The address was not flagged as a known attacker, spam source, or Tor exit node.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Amazon.com, Inc. |
| ASN | AS16509 |
| Network Name | AMAZON-CF |
| CIDR Block | 3.168.0.0/14 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | server-3-171-131-205.jfk52.r.cloudfront.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | server-3-171-131-205.jfk52.r.cloudfront.net |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Present |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | CloudFront |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | *.cloudfront.netcloudfront.net |
| Valid From | 2026-08-25T00:00:00+00:00 |
| Valid Until | 2027-03-10T23:59:59+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 197 days |
| Serial Number | 015E89F2D093DD92CD82A78C09A033C6 |
| Thumbprint | 5E9C8C0323F32C16F1D3F82DAE8E8E2D88E96056 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 25% | 1 | 1 |
| routing | 25% | 1 | 1 |
| services | 25% | 1 | 1 |
| ownership | 0% | 0 | 0 |
| reputation | 0% | 0 | 0 |
| geolocation | 0% | 0 | 0 |
| Overall | 12% | 3 | 3 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-21 18:37:16 UTC |
| Last Seen | 2026-09-21 18:37:16 UTC |
| Profile Built | 2026-09-21 18:56:58 UTC |
| Data Freshness | Live |
| Signal Types | 24 |
| Total Observations | 24 |
Full dossier details are available via our API.