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 →
About University of Toronto
The University of Toronto is a public research university with three main campuses in the Greater Toronto Area of Ontario, Canada. Based on the grounds that surround Queen's Park in Toronto, it was founded by royal charter in 1827 as King's College, the first institution of higher learning in Upper Canada.
AS239 — global IP footprint
Cities where AS239 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 |
|---|---|---|---|---|---|---|
| 142.150.0.0/15 | 131.1K |
10.1%
|
University of Toronto | CA | Ontario | Toronto |
| 128.100.0.0/16 | 65.5K |
14.5%
|
University of Toronto | CA | Ontario | Toronto |
| 138.51.0.0/16 | 65.5K |
30.3%
|
University of Toronto | CA | Ontario | Toronto |
| 142.1.0.0/16 | 65.5K |
13.1%
|
University of Toronto | CA | Ontario | Richmond Hill |
| 192.12.176.0/21 | 2.0K |
18.8%
|
University of Toronto | CA | Ontario | Toronto |
| 192.82.128.0/22 | 1.0K |
0.0%
|
University of Toronto | CA | — | — |
| 192.12.174.0/24 | 256 |
0.4%
|
University of Toronto | CA | — | — |
| 192.75.254.0/24 | 256 |
24.6%
|
University of Toronto | CA | Ontario | Maple |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS239 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 |
|---|---|---|
| 142.150.0.0/17 | 11,833 | 2026-09-09 22:26:29 |
| 142.151.0.0/17 | 11,815 | 2026-09-09 22:26:29 |
| 142.151.128.0/17 | 11,793 | 2026-09-09 22:26:29 |
| 142.150.128.0/17 | 11,776 | 2026-09-09 22:26:29 |
| 138.51.0.0/17 | 11,755 | 2026-09-09 22:26:29 |
| 138.51.128.0/17 | 11,694 | 2026-09-09 22:26:29 |
| 142.150.0.0/16 | 9,975 | 2026-09-09 22:26:29 |
| 142.151.0.0/16 | 9,920 | 2026-09-09 22:26:29 |
| 128.100.0.0/16 | 9,904 | 2026-09-09 22:26:29 |
| 192.75.254.0/24 | 9,793 | 2026-09-09 22:26:29 |
| 192.12.176.0/21 | 9,766 | 2026-09-09 22:26:29 |
| 138.51.0.0/16 | 9,763 | 2026-09-09 22:26:29 |
| 142.1.0.0/16 | 9,754 | 2026-09-09 22:26:29 |
| 192.82.128.0/22 | 9,713 | 2026-09-09 22:26:29 |
| 192.12.174.0/24 | 9,670 | 2026-09-09 22:26:29 |
Frequently Asked Questions
What is AS239?
AS239 is an Autonomous System Number assigned to University of Toronto. 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 AS239 announce?
AS239 announces 331.3K IPv4 addresses distributed across 8 routed CIDR prefixes. The network is registered in Canada.
Who operates AS239?
AS239 is operated by University of Toronto. The organization is based in Canada. You can view all IP ranges and related ASNs on the organization page.
What country is AS239 registered in?
AS239 is registered in Canada. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
