47.128.121.189
47.128.121.189 is an IPv4 address operated by Amazon Data Services Singapore (AS16509), geolocated to Singapore, Singapore. It belongs to datacenter or hosting infrastructure with reverse DNS name ec2-47-128-121-189.ap-southeast-1.compute.amazonaws.com. As of November 6, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.
# Intelligence Briefing: 47.128.121.189/32
Date: 2026-08-05
Classification: LOW RISK
---
## Executive Summary
IP address 47.128.121.189 is a low-risk infrastructure address associated with Amazon Web Services in Singapore. Analysis of the full intelligence profile, observation history, relationship graph, and neighborhood data indicates this is a legitimate cloud hosting resource with no active threat indicators. No security action is recommended.
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## Infrastructure Profile
| Attribute | Value |
|---|---|
| **IP Address** | 47.128.121.189/32 |
| **Risk Score** | 0 |
| **Provider** | Amazon Web Services (AWS) |
| **ASN** | 16509 (Amazon.com, Inc.) |
| **Organization** | Amazon Data Services Singapore |
| **CIDR Block** | 47.128.0.0/14 |
| **Location** | Singapore (1.35°N, 103.82°E) |
| **RIR** | ARIN |
| **Classification** | Cloud Infrastructure |
DNS Resolution:
- PTR Record: `ec2-47-128-121-189.ap-southeast-1.compute.amazonaws.com`
- Forward Resolution: Confirmed
- Domain: amazonaws.com
---
## Threat Assessment
Threat Indicators: None detected
- Blacklist Count: 0
- Abuse Confidence Score: Not applicable
- Known Campaigns: None
- Tor Exit Node: No
- Known Attacker: No
- Spam Source: No
Network Role:
- Service Purpose: Firewalled / No Services
- Open Ports: None detected
- Infrastructure Type: Unknown (cloud-based)
---
## Neighborhood Analysis (47.128.121.0/24)
| Metric | Value |
|---|---|
| Total Siblings | 106 |
| Active Siblings | 84 |
| Threat Siblings | 15 |
| Abuse Density | 0.1415 (Low) |
| Classification | Mostly Clean |
| Inherited Risk | 5 |
Risk Distribution: High: 0, Medium: 4, Low: 92
---
## Observation History
Total observations: 22
Recent Activity:
- 2026-08-05: Multiple geolocation signals confirming Singapore location via multi-signal inference and MaxMind GeoLite2.
- 2026-07-27: Various geolocation and ownership signals recorded.
Temporal Analysis:
- Ownership Changes: 0
- Threat Persistence Days: 0
- Threat Observation Count: 0
- Is Persistently Malicious: No
---
## Relationship Graph
- DNS Associations: `ec2-47-128-121-189.ap-southeast-1.compute.amazonaws.com` (multiple entries)
- Network Affiliation: AMAZON-SIN (Amazon Singapore network)
---
## Recommended Actions
Status: No action required
The IP address presents no security risk based on current intelligence. This is a standard AWS EC2 instance in Singapore's ap-southeast-1 region. No firewall rules or blocking recommendations are warranted.
---
Analysis Notes:
This IP address is part of Amazon's cloud infrastructure with proper DNS reverse and forward confirmation. The absence of open ports, threat indicators, and blacklist listings confirms normal cloud hosting behavior. The subnet shows a healthy abuse density ratio typical of major cloud providers.
Source: IPDebrief Intelligence Platform
Confidence: High
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Amazon Data Services Singapore |
| ASN | AS16509 |
| Network Name | AMAZON-SIN |
| CIDR Block | 47.128.0.0/14 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-47-128-121-189.ap-southeast-1.compute.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-47-128-121-189.ap-southeast-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 | 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 | — |
🛡️ Public Network Snapshot
| Origin ASN | AS16509 |
| Network Prefix | 47.128.0.0/14 |
| Route mapping | Found |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 49% | 2 | 5 |
| routing | 13% | 1 | 1 |
| services | 19% | 2 | 2 |
| ownership | 27% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 27% | 2 | 3 |
| Overall | 27% | 10 | 17 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-14 03:40:27 UTC |
| Last Seen | 2026-11-07 06:49:31 UTC |
| Profile Built | 2026-11-06 08:34:36 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 27 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 47.128.121.189
Who owns the IP address 47.128.121.189?
47.128.121.189 is registered to Amazon Data Services Singapore. The address falls within the 47.128.0.0/14 network block. Registration is held at ARIN.
Where is 47.128.121.189 located?
Geolocation data places 47.128.121.189 in Singapore, SG, Singapore. The local time zone is Asia/Singapore. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 47.128.121.189 malicious or safe?
47.128.121.189 currently carries a low risk assessment, meaning no significant threat indicators have been observed. This assessment is generated from continuously collected signals and can change over time.
What is the hostname for 47.128.121.189?
The reverse DNS (PTR) record for 47.128.121.189 is ec2-47-128-121-189.ap-southeast-1.compute.amazonaws.com. This hostname is forward-confirmed, meaning it resolves back to the same address.
Is 47.128.121.189 a VPN, proxy, or data center address?
47.128.121.189 is classified as cloud infrastructure and hosting infrastructure based on network ownership and behavioural analysis.