3.16.176.28
Intelligence report generated for IP 3.16.176.28 identified this address as an Amazon Web Services cloud asset owned by Amazon Technologies Inc. (ASN 16509). The endpoint resolved to `ec2-3-16-176-28.us-east-2.compute.amazonaws.com` and operated a web server on TCP port 443. TLS analysis indicated a certificate issued by Samsung Electronics OCF Server SubCA for the domain `*.samsungiotcloud.com`.
While the overall reputation risk score remained zero and no active threat campaigns were detected, geolocation validation presented contradictions. Sources conflicted between the United States and South Korea, with the TLS certificate issuer origin differing from the primary geolocation consensus. The local subnet (3.16.176.28/24) exhibited an abuse density of one and contained one threat sibling.
Analysts recommended monitoring this asset due to signal contradictions between network location and certificate origin, despite the low-risk classification. No immediate firewall rules were required based on current evidence.
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 | 3.0.0.0/9 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-3-16-176-28.us-east-2.compute.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-3-16-176-28.us-east-2.compute.amazonaws.com |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 80, 3389, 8080, 8443 (1 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | *.samsungiotcloud.com |
| Valid From | 2020-03-18T07:40:32+00:00 |
| Valid Until | 2035-04-09T07:40:32+00:00 |
| TLS Protocol | Tls12 |
| Cipher Suite | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256ECDSA |
| Validity Period | 5500 days |
| Serial Number | 33DEF0C83047D74E |
| Thumbprint | 30AA82E4144123E889C449CD1F47CDC2F811A97D |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 40% | 2 | 3 |
| routing | 20% | 1 | 1 |
| services | 40% | 2 | 3 |
| ownership | 40% | 2 | 3 |
| reputation | 20% | 1 | 2 |
| geolocation | 40% | 2 | 3 |
| Overall | 33% | 10 | 15 |
| Data Coherence | Mixed Signals (68%) — 2 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
⚠ TLS certificate claims KR but primary geo says US
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-18 11:40:56 UTC |
| Last Seen | 2026-09-19 22:38:19 UTC |
| Profile Built | 2026-09-23 08:35:50 UTC |
| Data Freshness | Live |
| Signal Types | 25 |
| Total Observations | 39 |
Full dossier details are available via our API.