AS31124 — SEFANET-AS Sefanet, Aubonne, Switzerland

AS31124 announces 2 IPv4 prefixes covering 5,120 addresses and 0 IPv6 prefixes.

About this network

SEFANET-AS is operated by Societe Electrique des Forces de l'Aubonne (SEFA).

What it's used for

• The address space carries internal corporate infrastructure, evidenced by reverse DNS entries pointing to sefanet.net (e.g., 217-119-148-0.sefanet.net).
• The AS announces 5120 IPv4 addresses across 2 prefixes with only 1 observed neighbour, indicating a small, self-contained internal network rather than a transit or large-scale access provider.

Notable

• Registrants for both announced prefixes (CH-SEFANET-20040303 and CH-SEFANET-20180914) align with the announcer, identified as Societe Electrique des Forces de l'Aubonne.
• SEFA is a Swiss electricity utility founded in 1895, originally supplying power to a tram line in Aubonne.
• The inventory consists of two distinct IPv4 blocks: 217.119.144.0/20 and 193.164.24.0/22.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 193.164.24.0/22
• 217.119.144.0/20

Upstream networks

• AS15547 netplus.ch SA

Adjacent networks

• AS15547 netplus.ch SA