Autonomous System

AS25021 Etat de Fribourg

GovernmentActiveSwitzerlandRIPE

AS25021 (CIEF-AS) is a government network operated by Etat de Fribourg in Switzerland, registered with RIPE. It has 2 IPv4 prefixes with 131,072 addresses, which makes it the 1,943rd largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses131,072in 2 prefixes
IPv6 prefixes0none
Size rank#1,943of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationEtat de Fribourg
AS nameCIEF-AS
Websitefr.ch
Country Switzerland (CH)
Network typeGovernment
RegistryRIPE
Abuse contactabuse@fr.ch
Registered2002-06-26
Last updated2026-09-02

IPv4 prefixes

2 prefixes · 131,072 addresses
NetworkAddressesFirst – last address
155.228.0.0/1665,536155.228.0.0 – 155.228.255.255
156.25.0.0/1665,536156.25.0.0 – 156.25.255.255

IPv6 prefixes

No IPv6 prefixes.

Query AS25021 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=AS25021&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS25021, with or without a key:

curl "https://api.ipapi.is/?q=155.228.0.1"

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