54.228.81.251
Intelligence Briefing: 54.228.81.251/32
Overview
The IP address was identified as belonging to Amazon.com, Inc. (AS16509) within the 54.228.0.0/15 block. Geolocation data placed the server in Dublin, IE, though source contradictions indicated a disagreement with US placement. The IP was classified as Low Risk with a reputation score of 25.
Threat Assessment
No active threat indicators were observed during the observation window. The IP was not flagged as a known attacker, spam source, or Tor exit node. However, the address appeared on one of eight DNS blocklists. The neighborhood classification for the /24 subnet was mostly clean with an abuse density of 0.5, though one threat sibling was detected within the range.
Technical Observations
DNS resolution confirmed the IP as an Amazon EC2 instance (ec2-54-228-81-251.eu-west-1.compute.amazonaws.com). No open ports or service banners were retrieved, indicating firewalled or inactive services. Email authentication
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Amazon.com, Inc. |
| ASN | AS16509 |
| Network Name | AMAZO-ZL3 |
| CIDR Block | 54.228.0.0/15 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-54-228-81-251.eu-west-1.compute.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-54-228-81-251.eu-west-1.compute.amazonaws.com |
🔐 DNS Hygiene
| Hygiene Score | 60% (Good) |
| SPF | 2/2 domains |
| DMARC | 2/2 domains |
| FCrDNS | Verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 2 domains |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| 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 | 33% | 2 | 4 |
| routing | 33% | 1 | 33 |
| services | 19% | 2 | 2 |
| ownership | 27% | 2 | 4 |
| reputation | 22% | 1 | 3 |
| geolocation | 19% | 2 | 2 |
| Overall | 25% | 10 | 48 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (55%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-05 14:40:36 UTC |
| Last Seen | 2026-09-23 10:58:03 UTC |
| Profile Built | 2026-09-23 11:17:28 UTC |
| Data Freshness | Live |
| Signal Types | 24 |
| Total Observations | 69 |
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