18.239.183.38
The IP address 18.239.183.38/32 was assessed as low risk with a risk score of 20. Ownership was attributed to Amazon.com, Inc. (ASN 16509, AMAZON-CF) within the 18.238.0.0/15 block. DNS resolution confirmed the CloudFront hostname server-18-239-183-38.bos50.r.cloudfront.net, and services observed included HTTP (TCP/80) and HTTPS (TCP/443) with a CloudFront banner. Geolocation data placed the host in Boston, US (US-MA), though a validation contradiction flagged an RTT measurement of 12ms against the calculated minimum distance of 152.5ms. No threat indicators, blacklist hits, or known campaigns were recorded. The associated subnet (18.239.183.38/24) was classified as mostly clean with 12 threat siblings. Due to signal contradictions, the recommendation was to monitor the address.
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 | 18.238.0.0/15 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | server-18-239-183-38.bos50.r.cloudfront.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | server-18-239-183-38.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 | 27% | 2 | 3 |
| routing | 30% | 3 | 4 |
| services | 27% | 2 | 3 |
| ownership | 30% | 3 | 4 |
| reputation | 13% | 1 | 2 |
| geolocation | 33% | 2 | 4 |
| Overall | 27% | 13 | 20 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-15 05:38:58 UTC |
| Last Seen | 2026-09-24 17:07:58 UTC |
| Profile Built | 2026-09-24 17:23:42 UTC |
| Data Freshness | Live |
| Signal Types | 30 |
| Total Observations | 41 |
Full dossier details are available via our API.