18.161.21.48
IP address 18.161.21.48 was assessed as a low-risk endpoint (Risk Score 25) associated with Amazon.com, Inc. (ASN 16509) within the AMAZON-CF network infrastructure. The address resolved to a CloudFront service (server-18-161-21-48.bos50.r.cloudfront.net) operating standard HTTP and HTTPS services. Observations occurred between 2026-09-01 and 2026-09-19, identifying the asset as part of a mostly clean subnet with minimal abuse density. While DNS hygiene remained excellent with valid SPF and DMARC records, the IP appeared on one DNS blacklist among eight total lists. Significant contradictions were noted between claimed geolocation (Washington, US) and Round-Trip Time physics measurements indicating a 7883km distance. Due to these signal inconsistencies and the unknown intent classification, analysts recommended monitoring the address for potential anomalies.
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-18-161-21-48.bos50.r.cloudfront.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | server-18-161-21-48.bos50.r.cloudfront.net |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Present |
☁️ 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 | 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 | 13% | 1 | 1 |
| services | 27% | 2 | 4 |
| ownership | 27% | 2 | 3 |
| reputation | 32% | 1 | 5 |
| geolocation | 33% | 2 | 4 |
| Overall | 28% | 10 | 23 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-01 19:25:31 UTC |
| Last Seen | 2026-09-19 04:00:37 UTC |
| Profile Built | 2026-09-19 04:15:35 UTC |
| Data Freshness | Live |
| Signal Types | 25 |
| Total Observations | 43 |
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