Autonomous System

AS20 University of Rochester

EducationActiveUnited StatesARIN

AS20 (UR) is an education network operated by University of Rochester in United States, registered with ARIN. It has 3 IPv4 prefixes with 66,048 addresses and 1 IPv6 prefix, which makes it the 3,356th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses66,048in 3 prefixes
IPv6 prefixes1≈ 3.1 × 10²⁶ addresses
Size rank#3,356of 82,200 active ASNs
Abuser scoreVery Low0.01% of its addresses flagged · method

Details

OrganizationUniversity of Rochester
AS nameUR
Websiterochester.edu
Country United States (US)
Network typeEducation
RegistryARIN
Abuse contactabuse@rochester.edu
Registered1984-07-27
Last updated2019-10-01

IPv4 prefixes

3 prefixes · 66,048 addresses
NetworkAddressesFirst – last address
128.151.0.0/1665,536128.151.0.0 – 128.151.255.255
192.5.53.0/24256192.5.53.0 – 192.5.53.255
199.89.214.0/24256199.89.214.0 – 199.89.214.255

IPv6 prefixes

1 prefix
  • 2620:107:a000::/40

Query AS20 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=AS20&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS20, with or without a key:

curl "https://api.ipapi.is/?q=128.151.0.1"

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