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 →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 164.166.2.0/24 | 256 |
0.0%
|
Calgary Board of Education | CA | — | — |
| 164.166.17.0/24 | 256 |
0.0%
|
Calgary Board of Education | CA | — | — |
| 164.166.20.0/24 | 256 |
0.0%
|
Calgary Board of Education | CA | — | — |
| 164.166.223.0/24 | 256 |
1.2%
|
Calgary Board of Education | CA | Alberta | Calgary |
| 192.139.27.0/24 | 256 |
0.4%
|
Calgary Board of Education | CA | Alberta | Calgary |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS19220 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 |
|---|---|---|
| 164.166.223.0/24 | 4,802 | 2026-08-03 23:15:47 |
| 192.139.27.0/24 | 4,300 | 2026-08-03 22:41:14 |
| 164.166.2.0/24 | 4,294 | 2026-08-03 23:15:47 |
| 164.166.17.0/24 | 4,267 | 2026-08-03 23:15:47 |
| 164.166.20.0/24 | 4,262 | 2026-08-03 23:15:47 |
Frequently Asked Questions
What is AS19220?
AS19220 is an Autonomous System Number assigned to Calgary Board of Education. 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 AS19220 announce?
AS19220 announces 1.3K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in Canada.
Who operates AS19220?
AS19220 is operated by Calgary Board of Education. The organization is based in Canada. You can view all IP ranges and related ASNs on the organization page.
What country is AS19220 registered in?
AS19220 is registered in Canada. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
