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
- Long-established allocation (30y) +6
- Not on any threat blocklist +5
- Trust score 76 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network Allocation for 203.181.244.28
- CIDR range
- 203.181.244.0/22
- IP range (int)
- 3,417,699,328 — 3,417,700,351
- Prefix length
- /22
- ASN
- AS2907
- ASN name
- Research Organization of Information and Systems, National Institute of Informatics
- Location
- Honchō, Saitama, Japan
- Coordinates
- 35.810300, 139.669600
- Accuracy radius
- 500 km
- Postal code
- 335-0021
- Regional Internet Registry
- APNIC
- Allocated
- 1996-04-11
- Data source(s)
- maxmind_city, maxmind_asn, ipinfo_lite, maxmind_country
- Last updated
- 2026-07-21 04:10:07
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
Frequently Asked Questions
Who owns 203.181.244.28?
203.181.244.28 is allocated to Research Organization of Information and Systems, National Institute of Informatics (AS2907), registered in Honchō, Japan.
Where is 203.181.244.28 located?
The geolocation for 203.181.244.28 maps to Honchō, 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 203.181.244.28 on?
203.181.244.28 belongs to the 203.181.244.0/22 network block announced by AS2907. This range contains 1,024 addresses.
Does 203.181.244.28 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.
