Data as of Nov 9, 2026
Autonomous system

AS4224

The Calyx Institute

Announces 512 addresses in 2 prefixes. None of it is anonymizer space.

Type
Education
US

Announced prefixes

Arrived
PrefixTypeHolderRPKI
162.247.72.0/24
since Apr 2014
Business
185.220.103.0/24
since Sep 2019
BusinessStiftung Erneuerbare Freiheit

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it