AS16367 SALAMON

Three blocks named the same, four reverse names, and three different ways of writing an address.

What it's used for

• A small provider's network. Three IPv4 prefixes announced from Slovakia, no IPv6, seven hundred and sixty-eight addresses, through one observed BGP neighbour.

Notable

• All three blocks carry the same netname, the company's first word alone, with no country code, no date and no numeral to distinguish them.
• They are all the smallest routable size and all sit near each other in the address space without being adjacent, which is what happens when a provider is given one block at a time from the same pool.
• Four of nine queried addresses answered, across two domains, in three styles. Two are the two letters for an address and then one number. One adds a second number, so the same style means different things on different blocks. The fourth is a gateway label with a two-letter abbreviation and a numeral.
• The busiest domain in those answers belongs to a brand that appears nowhere in the registry record.
• Each block lists the company under its legal form and an abuse contact, and nothing more.

Interesting

• A hostname that encodes only the last number of an address works until the provider has a second block, at which point every name collides with its twin. This record shows both the scheme and the patch: one answer carries an extra number that the others do not.
• Running customer addresses under a different brand's domain keeps the consumer name separate from the company that files the paperwork.