AS15958 CETIN_DOO_AS CETINdoo-NET

One thousand seven hundred and nineteen observed neighbours, the highest count in this range by a wide margin.

What it's used for

• A network infrastructure company carrying a mobile operator's traffic. Thirty IPv4 prefixes and one IPv6 /32 announced from Serbia, sixty-nine thousand six hundred and thirty-two addresses.

Notable

• The neighbour count is one thousand seven hundred and nineteen, against sixty-nine thousand addresses. Nothing else in this stretch comes close.
• The netnames split in two: a country code with the brand and a date, listing the company, a named individual and an abuse role; or the brand with a contraction for an access point name, listing only an abuse role.
• Nine of eighteen queried addresses answered, all on a third company's domain, with a mobile broadband label and the four octets reversed and hyphenated after the word for a network.
• Six of those nine carry an extra label marking the addresses as changeable; three do not.
• The AS handle uses underscores and repeats the brand twice, once with the legal form and once with the word for a network.

Interesting

• A neighbour count in the thousands does not mean thousands of contracts. It means this number is visible from an enormous number of vantage points, which is what happens when a wholesale carrier's routes are relayed onward by everyone who buys from its customers.
• An access point name in a netname is a mobile network's marker for which service a block belongs to, and it is the clearest sign in this record of what the addresses actually do.