34.243.19.21
# Threat Intelligence Briefing: 34.243.19.21/32
Classification: Low Risk - Cloud Infrastructure
## Executive Summary
IP address 34.243.19.21 is identified as Amazon Web Services cloud compute infrastructure operating from Dublin, Ireland (eu-west-1 region). Risk assessment yields a score of 25 (Low Risk), with no active threat indicators. The IP resolves to a standard EC2 hostname and maintains stable infrastructure patterns consistent with legitimate AWS services.
## Profile Details
| Attribute | Value |
|---|---|
| **Risk Score** | 25 (Low Risk) |
| **Organization** | Amazon Data Services Ireland Limited |
| **ASN** | AS16509 (Amazon.com, Inc.) |
| **CIDR Block** | 34.240.0.0/13 |
| **Location** | Dublin, IE (eu-west-1) |
| **Network Role** | Cloud Compute, Firewalled |
| **Services** | No open ports detected |
## Threat Indicators
- Blacklist Status: 1 DNSBL listing identified
- Threat Indicators: None detected
- Campaign Correlation: No known campaigns associated
- Abuse Confidence: Not flagged as known attacker or spam source
- Tor/Proxy: Not a Tor exit node or proxy
## Network Context
The /24 subnet (34.243.19.0/24) demonstrates "mostly_clean" classification with zero abuse density and no high-risk neighbors. The IP maintains consistent infrastructure patterns across 25 historical observations, showing stable AWS ownership and geographic localization.
DNS associations confirm the IP resolves to `ec2-34-243-19-21.eu-west-1.compute.amazonaws.com`, indicating legitimate EC2 infrastructure deployment.
## Recommended Actions
No immediate blocking or mitigation required. The IP represents standard cloud infrastructure with minimal risk characteristics. Routine monitoring appropriate.
Analyst Notes: This IP exhibits characteristics of legitimate AWS cloud compute infrastructure. The single DNSBL listing may warrant contextual review if associated with observed malicious traffic, but the IP itself does not demonstrate autonomous threat behavior.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Amazon Data Services Ireland Limited |
| ASN | AS16509 |
| Network Name | AMAZON-DUB |
| CIDR Block | 34.240.0.0/13 |
| RIR | ARIN |
| Country | Ireland |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-34-243-19-21.eu-west-1.compute.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-34-243-19-21.eu-west-1.compute.amazonaws.com |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 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 | 42% | 2 | 5 |
| routing | 13% | 1 | 1 |
| services | 19% | 2 | 2 |
| ownership | 30% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 35% | 2 | 2 |
| Overall | 28% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-28 10:06:45 UTC |
| Last Seen | 2026-08-12 22:27:43 UTC |
| Profile Built | 2026-08-12 22:37:26 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 27 |
Full dossier details are available via our API.