# 47.128.121.12 — IP Intelligence Summary 47.128.121.12 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 ec2-47-128-121-12.ap-southeast-1.compute.amazonaws.com. As of October 6, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected. - Canonical page: https://ipdebrief.com/47.128.121.12 - Last updated: 2026-10-06 ## Ownership - Organization: Amazon Data Services Singapore - Network name: AMAZON-SIN - Allocated block: 47.128.0.0/14 - ASN: AS16509 (https://ipdebrief.com/asn/16509) - Regional registry: ARIN - Cloud / hosting provider: Amazon Web Services ## Location - City: Singapore - Region: SG - Country: Singapore - Time zone: Asia/Singapore ## Network classification - Infrastructure type: — - Datacenter / hosting: yes - Residential: no - Mobile: no - Anycast: no - Tor exit node: no - VPN: no - Proxy: no ## Risk assessment - Assessment: Low Risk (25/100) - Blocklist listings: 0 - Suspicious activity indicators: no - Spam source: no ## Reverse DNS - ec2-47-128-121-12.ap-southeast-1.compute.amazonaws.com - Forward-confirmed: yes ## Analyst narrative \# Intelligence Briefing: IP 47.128.121.12/32 \## Executive Summary The target IP address 47.128.121.12 is identified as a low-risk infrastructure asset belonging to Amazon Data Services Singapore (AS16509). The address represents a firewalled Amazon EC2 instance deployed within the ap-southeast-1 region with no active services, open ports, or threat indicators. The overall risk assessment remains at 25 (Low Risk) with no evidence of malicious activity. \## Ownership and Network Profile The IP address is assigned to Amazon Data Services Singapore under the AMAZON-SIN network (47.128.0.0/14). Geolocation data confirms deployment in Singapore (1.35°N, 103.82°E) within the Asia/Singapore timezone. The infrastructure classification identifies this as cloud compute infrastructure with firewalled/no services status. DNS resolution confirms the address maps to ec2-47-128-121-12.ap-southeast-1.compute.amazonaws.com, consistent with AWS EC2 naming conventions. \## Threat Assessment Threat analysis returned no indicators of compromise. The IP address exhibits: \- Zero blacklist associations \- No known attacker status \- Not identified as a spam source \- No Tor exit node activity \- No known campaign associations \- Zero threat observation counts The abuse confidence score remains unpopulated, indicating no malicious activity detected against this address. \## Neighborhood Analysis The /24 subnet (47.128.121.0/24) contains 104 total sibling IPs with 80 currently active addresses. Abuse density measures 0.1442 (14.42%), with the subnet classified as "mostly_clean." Risk distribution across neighbors shows 0 high-risk, 3 medium-risk, and 93 low-risk addresses. The inherited risk score for this IP is 5, indicating minimal neighborhood-level contamination. \## Observation History Signal observation history contains 23 recorded observations with recent activity from August 2026. Observations include traceroute analysis (29 hops), banner scanning, port scanning, and geolocation validation. No persistent malicious behavior was detected. The IP has not undergone ownership changes and is not flagged as persistently malicious. \## Operational Status Network services analysis revealed no open ports or active services. The infrastructure remains in a passive, firewalled state. Control plane data indicates stable BGP routing (47.128.0.0/14 prefix) with no route changes over the 30-day observation window. DNSSEC validation is confirmed, and the address is listed on one DNS blacklist out of eight total checks. \## Recommendations No defensive actions required at this time. The IP address represents legitimate AWS infrastructure with no threat indicators. Continue standard monitoring procedures. ## Nearby addresses - 47.128.121.6 (https://ipdebrief.com/47.128.121.6) - 47.128.121.7 (https://ipdebrief.com/47.128.121.7) - 47.128.121.8 (https://ipdebrief.com/47.128.121.8) - 47.128.121.9 (https://ipdebrief.com/47.128.121.9) - 47.128.121.13 (https://ipdebrief.com/47.128.121.13) - 47.128.121.14 (https://ipdebrief.com/47.128.121.14) - 47.128.121.16 (https://ipdebrief.com/47.128.121.16) - 47.128.121.17 (https://ipdebrief.com/47.128.121.17) - 47.128.121.18 (https://ipdebrief.com/47.128.121.18) - 47.128.121.19 (https://ipdebrief.com/47.128.121.19) - 47.128.121.52 (https://ipdebrief.com/47.128.121.52) - 47.128.121.53 (https://ipdebrief.com/47.128.121.53) --- Source: IPDebrief, "47.128.121.12 IP intelligence", https://ipdebrief.com/47.128.121.12, updated 2026-10-06. Assessments are probabilistic.