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 (29y) +6
- Has a reverse-DNS (PTR) record +5
- Trust score 76 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 133.50.128.0/18
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 133.50.128.0/19 | 8.2K | Hokkaido University | AS7509 | JP |
| 133.50.160.0/19 | 8.2K | Hokkaido University | AS7509 | JP |
Geolocation
First 256 of 16,384 IP addresses in 133.50.128.0/18
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 133.50.0.0/16.
Frequently Asked Questions
What is 133.50.128.0/18?
133.50.128.0/18 is a CIDR network block containing 16,384 IPv4 addresses (from 133.50.128.0 to 133.50.191.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 133.50.128.0/18 network?
The 133.50.128.0/18 range is allocated to Hokkaido University and announced via AS7509 from Japan.