AS16383 LACAIXA-AS

The AS handle names a bank; the holder is the technology company that runs its network.

What it's used for

• A banking technology company's network. Two IPv4 prefixes announced from Spain, no IPv6, five thousand one hundred and twenty addresses, through four observed BGP neighbours.

Notable

• The AS handle is a bank's brand and the letters for an autonomous system. The holder field is a different company entirely, two short words and a legal form.
• Both netnames use the bank's brand too: a country code, the brand, and a full date. The company that actually holds the blocks appears in neither.
• The two dates are seventeen years apart and the scheme did not change between them.
• Both blocks list the holder under its legal form and an abuse contact whose label writes the same two words without the space between them and with only one capital.
• One of six queried addresses answered: the address hyphenated into four parts, on the bank's domain rather than the holder's.
• Four upstreams for five thousand addresses is generous peering for a network this size.

Interesting

• Banks spin their technology into a separate company and keep the brand on everything the outside world can see. The registry shows both halves at once: the addresses belong to the subsidiary and every name attached to them belongs to the parent.
• The one reverse name in the sample resolves to the bank, which is the answer anyone investigating an address from this range would want. The holder's name would tell them nothing.