18.161.21.119
Intelligence Briefing: IP 18.161.21.119/32 was assessed with a Low Risk reputation score of 25. Ownership was attributed to Amazon.com, Inc. (AS16509) within the AMAZON-CF network block (18.160.0.0/15). Reverse DNS resolution identified the host as server-18-161-21-119.bos50.r.cloudfront.net, and service banners indicated CloudFront web server functionality on ports 80 and 443. The geolocation database listed the address in Washington, US, but RTT physics validation contradicted the claimed distance, noting a 16ms RTT against a minimum possible 157.7ms. No direct threat indicators, known campaigns, or blacklist listings were observed. Neighborhood analysis for the 18.161.21.0/24 subnet identified 14 threat siblings out of 101 active addresses. The control plane indicated valid RPKI and IRR consistency. Operational recommendation was to Monitor the address with Low severity due to signal contradictions.
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 | 18.160.0.0/15 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | server-18-161-21-119.bos50.r.cloudfront.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | server-18-161-21-119.bos50.r.cloudfront.net |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | 2/2 domains |
| DMARC | 2/2 domains |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Present |
| Domains Checked | 2 domains |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Tier 2 — Moderate operator sophistication with routing hygiene |
🔌 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 | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 37% | 2 | 6 |
| routing | 38% | 4 | 5 |
| services | 38% | 2 | 5 |
| ownership | 41% | 3 | 5 |
| reputation | 32% | 1 | 5 |
| geolocation | 27% | 2 | 4 |
| Overall | 35% | 14 | 30 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | High (85%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-05 23:07:29 UTC |
| Last Seen | 2026-09-25 22:54:01 UTC |
| Profile Built | 2026-09-25 23:08:01 UTC |
| Data Freshness | Live |
| Signal Types | 33 |
| Total Observations | 53 |
Full dossier details are available via our API.