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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 136.159.0.0/16 | 65.5K |
51.5%
|
University of Calgary | CA | Alberta | Calgary |
| 198.161.127.0/24 | 256 |
0.0%
|
University of Calgary | CA | — | — |
| 198.161.243.0/24 | 256 |
0.0%
|
University of Calgary | CA | Alberta | Calgary |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS33091 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 |
|---|---|---|
| 198.161.243.0/24 | 4,028 | 2026-07-18 10:52:47 |
| 136.159.0.0/16 | 4,001 | 2026-07-18 12:00:59 |
| 198.161.127.0/24 | 114 | 2026-07-17 04:19:55 |
Frequently Asked Questions
What is AS33091?
AS33091 is an Autonomous System Number assigned to University of Calgary. 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 AS33091 announce?
AS33091 announces 66.0K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Canada.
Who operates AS33091?
AS33091 is operated by University of Calgary. The organization is based in Canada. You can view all IP ranges and related ASNs on the organization page.
What country is AS33091 registered in?
AS33091 is registered in Canada. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
