AS13171 — BSU

AS13171 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

An entire university's outbound traffic behind one address, and its name says so.

What it's used for

• The network of a university in Belarus. 256 addresses in one IPv4 prefix, one observed BGP neighbour, and no IPv6 announced.

Notable

• The single prefix is 217.21.43.0/24, netname BELSTATEUNIVERSITY.
• The AS handle is BSU, three letters with nothing else.
• One of three sampled addresses returned a name: nat.bsu.by.
• One observed BGP neighbour.

Interesting

• A host called nat is the translation point every internal machine leaves through. It means the university's real network is private space of whatever size it likes, and the /24 exists to give that traffic a public face plus room for the servers that must be reachable from outside.
• That arrangement is why address counts understate institutions badly. Two hundred and fifty-six addresses could be a small office; here it fronts a whole campus, and only the hostname reveals it.
• The netname spells the institution out in full with no separators and no date, an older style than the country-prefixed dated form that dominates this range.
• One upstream for a national university is a single point of failure, and also the normal shape when research and education traffic all leaves through one academic network.

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

Announced prefixes

• 217.21.43.0/24

Upstream networks

• AS25106 Mobile TeleSystems JLLC

Adjacent networks

• AS25106 Mobile TeleSystems JLLC