AS15675 — ETAT-DE-VAUD

AS15675 announces 6 IPv4 prefixes covering 69,376 addresses and 0 IPv6 prefixes.

About this network

Twenty-eight routes carve up one range, and not one of them is the whole thing.

What it's used for

• A cantonal government's network. Twenty-eight IPv4 prefixes announced from Switzerland, no IPv6, sixty-nine thousand addresses, through three observed BGP neighbours.

Notable

• Most of the twenty-eight blocks come out of one range, split into pieces from /19 down to /24, with the covering block never announced on its own.
• Every one of those blocks carries the identical netname and the identical registrant, so the split exists in routing and nowhere in the registry.
• Four further blocks sit in unrelated ranges, and they carry the same netname too.
• The holder string names the canton twice, once hyphenated at the front and once spaced at the end, with the department's full title between them.
• A second contact on every block is a security team rather than a network one.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• Announcing the pieces but never the cover means every one of them has to be carried separately by every network on the internet. One route would reach the same addresses; twenty-eight is what survives when each site gets its own announcement and nobody adds the summary.
• Listing a security team as a registry contact is unusual and sensible. The address record is where an outside report starts, and pointing it at the people who handle reports skips a step.
• Sixty-nine thousand addresses with no IPv6 at all is a large network that has not needed to move.

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

Announced prefixes

• 145.232.0.0/16
• 193.5.240.0/21
• 193.5.248.0/23
• 193.135.104.0/23
• 193.135.138.0/24
• 194.56.250.0/23

Upstream networks

• AS6730 Sunrise GmbH
• AS25091 IP-Max SA
• AS3303 Swisscom (Schweiz) AG

Adjacent networks

• AS6730 Sunrise GmbH
• AS25091 IP-Max SA
• AS3303 Swisscom (Schweiz) AG