3.5.128.11
Intelligence reporting indicates IP 3.5.128.11/32 is assigned to Amazon Web Services (AS16509) under the AMAZON-S3 network. Ownership data attributed the address to Amazon Data Services Northern Virginia in Columbus, Ohio. Reputation scoring assigned a Low Risk classification with a risk score of 25.
Scanning identified open TCP ports 80, 443, and 8080. TLS certificates validated *.s3.us-east-2.amazonaws.com with an issuer of Amazon RSA 2048 M01. Server banners returned AmazonS3. DNS records resolved to amazonaws.com with PTR hostname s3-r-w.us-east-2.amazonaws.com.
Analysis revealed a contradiction between claimed geolocation and RTT physics measurements (6580km distance vs 35ms RTT). Control plane data recorded the address on 1 of 8 DNSBLs, while neighborhood analysis reported zero threat siblings. The system tagged the host as a "Suspicious Host" due to signal contradictions. Analysts recommended monitoring the asset pending resolution of data inconsistencies.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Amazon Data Services Northern Virginia |
| ASN | AS16509 |
| Network Name | AMAZON-S3 |
| CIDR Block | 3.5.0.0/16 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | s3-r-w.us-east-2.amazonaws.com |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | s3-r-w.us-east-2.amazonaws.com |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | 2/2 domains |
| DMARC | 2/2 domains |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 2 domains |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| 8080 | http-alt | tcp | — |
| Closed Ports | 22, 25, 3389, 8443 (3 open / 7 scanned) | ||
| Server | AmazonS3 |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | *.s3.us-east-2.amazonaws.coms3.us-east-2.amazonaws.com*.s3.amazonaws.com*.s3-accesspoint.dualstack.us-east-2.amazonaws.com*.s3-control.us-east-2.amazonaws.coms3.dualstack.us-east-2.amazonaws.coms3-control.dualstack.us-east-2.amazonaws.com*.s3-deprecated.us-east-2.amazonaws.com*.s3.dualstack.us-east-2.amazonaws.coms3-control.us-east-2.amazonaws.com |
| Valid From | 2026-07-12T00:00:00+00:00 |
| Valid Until | 2027-01-25T23:59:59+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 197 days |
| Serial Number | 075F79C2B32303609A25DE8583D1F8E2 |
| Thumbprint | 3DBB9A8EA89C1DD8DF473C1CF9666DAEB2C21F70 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 27% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 33% | 2 | 4 |
| ownership | 27% | 2 | 3 |
| reputation | 13% | 1 | 2 |
| geolocation | 35% | 2 | 3 |
| Overall | 25% | 10 | 16 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-09 19:35:01 UTC |
| Last Seen | 2026-09-21 09:18:17 UTC |
| Profile Built | 2026-09-21 09:29:17 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 33 |
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