Autonomous System

AS26 Cornell University

EducationActiveUnited StatesARIN

AS26 (CORNELL) is an education network operated by Cornell University in United States, registered with ARIN. It has 6 IPv4 prefixes with 197,376 addresses and 1 IPv6 prefix, which makes it the 1,324th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses197,376in 6 prefixes
IPv6 prefixes1≈ 1.9 × 10²⁵ addresses
Size rank#1,324of 82,200 active ASNs
Abuser scoreVery Low0.01% of its addresses flagged · method

Details

OrganizationCornell University
AS nameCORNELL
Websitecornell.edu
Country United States (US)
Network typeEducation
RegistryARIN
Abuse contactnoc@cornell.edu
Registered1984-08-10
Last updated2025-03-27

IPv4 prefixes

6 prefixes · 197,376 addresses
NetworkAddressesFirst – last address
128.84.0.0/1665,536128.84.0.0 – 128.84.255.255
128.253.0.0/1665,536128.253.0.0 – 128.253.255.255
132.236.0.0/1665,536132.236.0.0 – 132.236.255.255
192.35.82.0/24256192.35.82.0 – 192.35.82.255
192.122.235.0/24256192.122.235.0 – 192.122.235.255
192.122.236.0/24256192.122.236.0 – 192.122.236.255

IPv6 prefixes

1 prefix
  • 2620:110:d000::/44

Query AS26 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS26&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS26, with or without a key:

curl "https://api.ipapi.is/?q=128.84.0.1"

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