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
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 203.24.137.0/24 | 256 |
8.6%
|
Cranbrook School | AU | New South Wales | Sydney |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS37993 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 203.24.137.0/24 | 7,143 | 2026-08-01 09:14:25 |
Frequently Asked Questions
What is AS37993?
AS37993 is an Autonomous System Number assigned to Cranbrook School,. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS37993 announce?
AS37993 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Australia.
Who operates AS37993?
AS37993 is operated by Cranbrook School. The organization is based in Australia. You can view all IP ranges and related ASNs on the organization page.
What country is AS37993 registered in?
AS37993 is registered in Australia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
