18.161.21.126
Intelligence Briefing: IP 18.161.21.126/32
Summary
Analysis classified IP 18.161.21.126 as Low Risk with a risk score of 10. The asset belongs to Amazon.com, Inc. (ASN 16509) within the AMAZON-CF network (18.160.0.0/15). No malicious indicators, blacklists, or known attacker associations were present.
Technical Profile
Active services included TCP/80 (HTTP) and TCP/443 (HTTPS). The server banner returned "CloudFront." Forward resolution confirmed the domain cloudfront.net with a PTR hostname of server-18-161-21-126.bos50.r.cloudfront.net. RPKI state was valid for the originating BGP prefix 18.161.16.0/21.
Observations
Geolocation data placed the address in Boston, US (US-MA). However, RTT physics measurements (average 20.6ms) contradicted the claimed distance of 7883.3km, resulting in a flagged signal contradiction. DNS hygiene scoring was Excellent (80) with valid
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-18-161-21-126.bos50.r.cloudfront.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | server-18-161-21-126.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 | 13% | 1 | 1 |
| routing | 30% | 3 | 4 |
| services | 27% | 2 | 3 |
| ownership | 30% | 3 | 4 |
| reputation | 13% | 1 | 1 |
| geolocation | 35% | 2 | 3 |
| Overall | 25% | 12 | 16 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-14 17:34:45 UTC |
| Last Seen | 2026-09-24 13:21:47 UTC |
| Profile Built | 2026-09-24 13:28:50 UTC |
| Data Freshness | Live |
| Signal Types | 30 |
| Total Observations | 38 |
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