157.72.168.227
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 (34y) +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 157.72.168.227
- CIDR range
- 157.72.128.0/17
- IP range (int)
- 2,638,774,272 — 2,638,807,039
- Prefix length
- /17
- Organization
- JR East Information Systems Company
- ASN
- AS131932
- ASN name
- JR East Information Systems Company
- Location
- Kita, Tokyo, Japan
- Coordinates
- 35.690000, 139.690000
- Accuracy radius
- 500 km
- Postal code
- 114-8501
- Regional Internet Registry
- ARIN
- Allocated
- 1992-02-10
- Data source(s)
- maxmind_city, maxmind_asn, ipinfo_lite, maxmind_country
- Last updated
- 2026-07-08 06:22:20
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 | RIR Transfer | arin | apnic |
See the full history for 157.72.0.0/13.
Frequently Asked Questions
Who owns 157.72.168.227?
157.72.168.227 is allocated to JR East Information Systems Company (AS131932), registered in Kita, Japan.
Where is 157.72.168.227 located?
The geolocation for 157.72.168.227 maps to Kita, 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 157.72.168.227 on?
157.72.168.227 belongs to the 157.72.128.0/17 network block announced by AS131932. This range contains 32,768 addresses.
Does 157.72.168.227 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.
