47.91.28.100
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Not on any threat blocklist +5
- Established allocation (11y) +3
- Trust score 73 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Network Allocation for 47.91.28.100
- CIDR range
- 47.91.0.0/19
- IP range (int)
- 794,492,928 — 794,501,119
- Prefix length
- /19
- Organization
- Alibaba US Technology Co., Ltd.
- ASN
- AS45102
- ASN name
- Alibaba (US) Technology Co., Ltd.
- Location
- Tokyo, Tokyo, Japan
- Coordinates
- 35.689300, 139.689900
- Accuracy radius
- 20 km
- Postal code
- 102-0082
- Regional Internet Registry
- ARIN
- Allocated
- 2015-05-18
- Data source(s)
- maxmind_city, maxmind_country, ipinfo_lite, maxmind_asn
- Last updated
- 2026-07-11 09:20:16
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
RIR Ownership History
Atom feed ⇲Allocation changes captured weekly from regional internet registry (RIR) delegation files for ranges that have contained this IP.
| Date | Event | From | To |
|---|---|---|---|
| 2026-05-10 | New Allocation | — | US |
See the full history for 47.91.0.0/16.
Frequently Asked Questions
Who owns 47.91.28.100?
47.91.28.100 is allocated to Alibaba US Technology Co., Ltd. (AS45102), registered in Tokyo, Japan.
Where is 47.91.28.100 located?
The geolocation for 47.91.28.100 maps to Tokyo, Japan based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.
What network is 47.91.28.100 on?
47.91.28.100 belongs to the 47.91.0.0/19 network block announced by AS45102. This range contains 8,192 addresses.
Does 47.91.28.100 have a reverse DNS record?
Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.
Neighbors
Other addresses in the same /24.
