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
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
AS21533 — global IP footprint
Cities where AS21533 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 64.141.104.0/22 | 1.0K |
0.1%
|
Corus Entertainment Inc | CA | Ontario | Toronto |
| 137.83.31.0/24 | 256 |
0.0%
|
Corus Entertainment Inc | CA | Alberta | Calgary |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21533 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 |
|---|---|---|
| 137.83.31.0/24 | 8,546 | 2026-07-30 18:55:45 |
| 64.141.104.0/22 | 6,127 | 2026-08-03 22:43:45 |
Frequently Asked Questions
What is AS21533?
AS21533 is an Autonomous System Number assigned to Corus Entertainment Inc. 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 AS21533 announce?
AS21533 announces 1.3K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Canada.
Who operates AS21533?
AS21533 is operated by Corus Entertainment Inc. The organization is based in Canada. You can view all IP ranges and related ASNs on the organization page.
What country is AS21533 registered in?
AS21533 is registered in Canada. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
