AS16030 ALTECOM

Three brands across the handle, the netnames and the abuse contact, and one upstream for all of it.

What it's used for

• A regional fibre provider. Twenty-one IPv4 prefixes announced from Spain, no IPv6, fourteen thousand five hundred and ninety-two addresses, through a single observed BGP neighbour.

Notable

• The AS handle is one brand, the holder is a second, and the abuse contact on every block is the word for abuse followed by a third.
• Six blocks share a netname of the country code, the first brand and one identical date, so a whole group of allocations was registered in a single sitting.
• The remaining netnames are just a brand with nothing attached, some the first and some the second, and those blocks list no company at all, only the abuse role.
• Sixteen of eighteen queried addresses answered, nearly all four letters for fibre to the home, the octets hyphenated, on a domain in the regional language's top-level domain.
• One address answers differently: three letters for a metropolitan network, with two of the octets run together and no separators, on the older brand's domain.
• Fourteen thousand addresses and twenty-one announcements behind a single upstream.

Interesting

• The regional-language domain is a choice, not an accident. Picking it over a national one puts the identity of the customer base into every reverse lookup.
• One upstream for a network this size is unusual and fragile, and it says the provider buys wholesale from a single carrier rather than peering on its own account.