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 |
|---|---|---|---|---|---|---|
| 69.42.176.0/20 | 4.1K |
0.5%
|
Ontario Health | CA | Ontario | Toronto |
| 76.75.128.0/20 | 4.1K |
2.1%
|
Ontario Health | CA | Ontario | Toronto |
| 76.75.168.0/21 | 2.0K |
0.1%
|
Ontario Health | CA | — | — |
| 76.75.184.0/21 | 2.0K |
0.0%
|
Ontario Health | CA | — | — |
| 76.75.144.0/22 | 1.0K |
2.6%
|
Ontario Health | CA | — | — |
| 76.75.156.0/22 | 1.0K |
0.0%
|
Ontario Health | CA | — | — |
| 76.75.164.0/22 | 1.0K |
7.7%
|
Ontario Health | CA | — | — |
| 205.210.180.0/22 | 1.0K |
0.0%
|
Ontario Health | CA | — | — |
| 76.75.152.0/23 | 512 |
0.0%
|
Ontario Health | CA | — | — |
| 76.75.160.0/23 | 512 |
1.2%
|
Ontario Health | CA | — | — |
| 76.75.176.0/23 | 512 |
2.9%
|
Ontario Health | CA | — | — |
| 76.75.180.0/23 | 512 |
0.6%
|
Ontario Health | CA | — | — |
| 76.75.148.0/24 | 256 |
0.4%
|
Ontario Health | CA | — | — |
| 76.75.151.0/24 | 256 |
0.4%
|
Ontario Health | CA | — | — |
| 76.75.154.0/24 | 256 |
0.0%
|
Ontario Health | CA | — | — |
| 76.75.163.0/24 | 256 |
1.6%
|
Ontario Health | CA | — | — |
| 76.75.178.0/24 | 256 |
0.0%
|
Ontario Health | CA | — | — |
| 199.212.118.0/24 | 256 |
0.0%
|
Ontario Health | CA | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21992 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 |
|---|---|---|
| 205.210.180.0/22 | 16,177 | 2026-09-13 10:14:31 |
| 199.212.118.0/24 | 10,763 | 2026-09-13 10:14:26 |
| 69.42.184.0/21 | 10,323 | 2026-09-13 10:12:32 |
| 76.75.144.0/20 | 10,190 | 2026-09-13 10:13:14 |
| 76.75.176.0/20 | 10,175 | 2026-09-13 10:13:14 |
| 69.42.176.0/20 | 10,145 | 2026-09-13 10:12:32 |
| 76.75.160.0/19 | 10,112 | 2026-09-13 10:13:14 |
| 76.75.128.0/19 | 10,101 | 2026-09-13 10:13:14 |
Frequently Asked Questions
What is AS21992?
AS21992 is an Autonomous System Number assigned to Ontario Health. 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 AS21992 announce?
AS21992 announces 20.0K IPv4 addresses distributed across 18 routed CIDR prefixes. The network is registered in Canada.
Who operates AS21992?
AS21992 is operated by Ontario Health. The organization is based in Canada. You can view all IP ranges and related ASNs on the organization page.
What country is AS21992 registered in?
AS21992 is registered in Canada. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
