18.239.166.218
Intelligence analysts assessed IP address 18.239.166.218 as a low-risk endpoint associated with Amazon Web Services CloudFront. Ownership records linked the address to Amazon.com, Inc. (ASN 16509), operating within the AMAZON-CF network. The infrastructure presented web server functionality on ports 80 and 443, returning CloudFront server banners and resolving to server-18-239-166-218.bos50.r.cloudfront.net.
Threat assessment yielded a reputation risk score of 25 with zero blacklist hits and no active attack campaigns. However, validation data identified a contradiction between claimed geolocation in Boston and RTT physics measurements, which suggested a distance of 7,625km. Neighborhood data classified the /24 subnet as mostly clean, despite four active threat siblings within the total population of thirty-three.
Due to these signal contradictions, the assessment labeled the host as suspicious with a low severity rating. Analysts recommended a Monitor action rather than blockage, noting the infrastructure as legitimate CDN property with minimal malicious context.
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-18-239-166-218.bos50.r.cloudfront.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | server-18-239-166-218.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 | Hosting — Infrastructure provider without advanced routing |
🔌 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 | *.cloudfront.netcloudfront.net |
| Valid From | 2026-08-25T00:00:00+00:00 |
| Valid Until | 2027-03-10T23:59:59+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_128_GCM_SHA256 |
| Signature Algorithm | sha256RSA |
| Validity Period | 197 days |
| Serial Number | 015E89F2D093DD92CD82A78C09A033C6 |
| Thumbprint | 5E9C8C0323F32C16F1D3F82DAE8E8E2D88E96056 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 43% | 2 | 5 |
| routing | 13% | 1 | 1 |
| services | 33% | 2 | 4 |
| ownership | 33% | 2 | 4 |
| reputation | 31% | 1 | 4 |
| geolocation | 35% | 2 | 3 |
| Overall | 31% | 10 | 21 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-08-30 14:59:04 UTC |
| Last Seen | 2026-09-22 03:13:29 UTC |
| Profile Built | 2026-09-22 03:19:31 UTC |
| Data Freshness | Live |
| Signal Types | 25 |
| Total Observations | 38 |
Full dossier details are available via our API.