AS12991 LAND-OOE Rechenzentrum

A regional government's data centre, with one gateway visible and nothing else.

What it's used for

• The network of an Austrian state government administration. 10,240 addresses across three IPv4 prefixes, one IPv6 prefix, and three observed BGP neighbours.

Notable

• All three IPv4 blocks share the netname ATOOEN01.
• The AS handle is LAND-OOE Rechenzentrum, naming the data centre rather than the government.
• The IPv6 prefix is a /48 from a range the regional registry assigns directly.
• One of nine sampled addresses returned a name: gateway.ooe.gv.at.

Interesting

• ATOOEN01 is a country code, a state abbreviation, a letter and a sequence number, which is a naming scheme built to be extended rather than read. The 01 implies an 02 that the three blocks sharing this one name never needed.
• The single visible hostname is gateway, on a government domain. A regional administration runs schools, hospitals and offices behind that address space, and the public internet sees one labelled door. That is the correct amount to expose and it is rarer than it should be.
• The handle names the data centre because, for a government, the network belongs to a facility rather than to a department. Whoever registered it was describing the operational owner, which is more accurate than the political entity would have been.
• Three blocks, one netname, and space in 194.48 allocated in the mid-1990s. Public administrations connected early, kept what they were given, and have had little reason to expand since; a /19 has covered a state's entire administration for thirty years.