3.151.170.137
The IP address 3.151.170.137 was assessed as Low Risk with a risk score of 0 on September 19, 2026. Ownership records identified the host under Amazon Technologies Inc. (ASN 16509) within the 3.128.0.0/9 CIDR block. Geolocation data located the endpoint in Columbus, OH, United States, while reverse DNS resolution confirmed the address as ec2-3-151-170-137.us-east-2.compute.amazonaws.com.
The infrastructure operated as an Amazon Web Services EC2 instance serving HTTPS traffic on port 443. Fingerprinting identified the server as nginx running HTTP/2. The TLS certificate was issued by Amazon RSA 2048 M01 with the subject *.kaizen.nvidia.com. DNS hygiene checks confirmed SPF and DMARC records and forward-confirmed reverse DNS.
Threat intelligence indicators returned no matches for blacklists, campaigns, or known attackers. The address was not classified as a proxy, Tor exit node, or spam source. Operational assessment classified the intent as Legitimate Infrastructure. The recommendation was to Allow traffic with an information-level severity.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Amazon Technologies Inc. |
| ASN | AS16509 |
| Network Name | AT-88-Z |
| CIDR Block | 3.128.0.0/9 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-3-151-170-137.us-east-2.compute.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-3-151-170-137.us-east-2.compute.amazonaws.com |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | 6/6 domains |
| DMARC | 6/6 domains |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 6 domains |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 80, 3389, 8080, 8443 (1 open / 7 scanned) | ||
| Server | nginx |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | *.kaizen.nvidia.com |
| Valid From | 2026-05-15T00:00:00+00:00 |
| Valid Until | 2026-11-28T23:59:59+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 197 days |
| Serial Number | 098BC7E4429528ED8F55A14732201A73 |
| Thumbprint | 40EB553B259684744AC444AB8B3F2C65FBA0C577 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 40% | 2 | 5 |
| routing | 13% | 1 | 1 |
| services | 37% | 2 | 6 |
| ownership | 27% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 19% | 2 | 2 |
| Overall | 27% | 10 | 20 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-05 00:00:52 UTC |
| Last Seen | 2026-09-27 01:28:33 UTC |
| Profile Built | 2026-09-27 01:40:19 UTC |
| Data Freshness | Live |
| Signal Types | 25 |
| Total Observations | 42 |
Full dossier details are available via our API.