AS15496 — Aalto University

AS15496 announces 1 IPv4 prefixes covering 65,536 addresses and 0 IPv6 prefixes.

About this network

The one name published says which switch the address sits behind, not which address it is.

What it's used for

• A university network. A single IPv4 /16 announced from Finland, no IPv6, sixty-five thousand addresses, through one observed BGP neighbour.

Notable

• The one block carries a netname of the institution's name and the country code, and nothing else.
• The single answering address returns a name built from a letter, a three-digit number, and a second number, under a subdomain for organisational hosts.
• Neither number in that name matches any octet of the address it belongs to.
• Sixty-five thousand addresses announced as one route, with no fragments.
• Three addresses were queried for reverse DNS and one returned a name.

Interesting

• A reverse name that encodes a virtual network number and a position within it, rather than the address, is a campus convention. It tells an operator which switched segment the machine is on, which is the question they actually have.
• The trade-off is that the name means nothing to anyone outside. An external observer sees a label with no way to relate it back to the address.
• A block this size held by one university, announced whole with a single upstream, is the shape of a network that connected early and has never needed to change.

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

Announced prefixes

• 130.233.0.0/16

Upstream networks

• AS1741 Tieteen tietotekniikan keskus Oy

Adjacent networks

• AS1741 Tieteen tietotekniikan keskus Oy