AS16117 GAVLENET se.gavlenet Autonomous System

One reverse name writes the address out in hexadecimal; the rest name the fibre type and the district it serves.

What it's used for

• A municipal energy company's city network. Five IPv4 prefixes and one IPv6 block announced from Sweden, twenty-nine thousand six hundred and ninety-six addresses, across thirty-nine observed BGP neighbours.

Notable

• Eight of fifteen queried addresses answered. Most names are the last number of the address, then a label that runs the access technology into a district name and a number, then the network's domain.
• Those technology labels distinguish fibre delivered to a building from fibre delivered to a home, and the district names are neighbourhoods and outlying towns, so the zone doubles as a map of the build.
• One replaces the numeric label with two letters for a broadcast address.
• One belongs to a residential customer and encodes all four numbers of the address as eight hexadecimal digits after the word for private, a form used nowhere else in the sample.
• All five blocks share a netname of country code, brand and date, with dates spanning fifteen years, and all list the same operations role alongside the energy company.

Interesting

• Municipal utilities became internet providers because they already had trenches, staff and a duty to the same households. The energy company in the holder field and the city network in the domain are the same organisation wearing two hats.
• Thirty-nine peers for thirty thousand addresses is an open-access network: the city owns the fibre and sells access across it to many retail providers.