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 →
About Cornell University
Cornell University is a private Ivy League research university based in Ithaca, New York, United States. The university was co-founded by American philanthropist Ezra Cornell and historian and educator Andrew Dickson White in 1865.
Network profile
Source: PeeringDB →AS26 — global IP footprint
Cities where AS26 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 |
|---|---|---|---|---|---|---|
| 128.84.0.0/16 | 65.5K |
24.6%
|
Cornell University | US | New York | Ithaca |
| 128.253.0.0/16 | 65.5K |
16.1%
|
Cornell University | US | New York | Ithaca |
| 132.236.0.0/16 | 65.5K |
16.1%
|
Cornell University | US | New York | Ithaca |
| 192.35.82.0/24 | 256 |
6.3%
|
Cornell University | US | New York | Ithaca |
| 192.122.235.0/24 | 256 |
0.0%
|
Cornell University | US | — | — |
| 192.122.236.0/24 | 256 |
0.4%
|
Cornell University | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS26 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 |
|---|---|---|
| 128.84.0.0/16 | 18,478 | 2026-07-18 17:56:38 |
| 128.253.0.0/16 | 18,425 | 2026-07-18 17:56:38 |
| 132.236.0.0/16 | 18,394 | 2026-07-18 17:56:38 |
| 192.122.236.0/24 | 18,121 | 2026-07-18 17:56:38 |
| 192.122.235.0/24 | 18,103 | 2026-07-18 17:56:38 |
| 192.35.82.0/24 | 18,087 | 2026-07-18 17:56:38 |
| 38.19.44.0/24 | 30 | 2026-05-26 18:58:21 |
Frequently Asked Questions
What is AS26?
AS26 is an Autonomous System Number assigned to Cornell University. 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 AS26 announce?
AS26 announces 197.4K IPv4 addresses distributed across 6 routed CIDR prefixes. The network is registered in United States.
Who operates AS26?
AS26 is operated by Cornell University. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS26 registered in?
AS26 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
