AS11790 RANDOMHOUSE

RANDOMHOUSE is the corporate network of the book publisher Random House, Inc., registered at 1745 Broadway in New York — the tower that is now Penguin Random House's headquarters. ARIN has held the AS in the company's name since 1998, and it still routes only Random House's own address space.

What it's used for

This is an enterprise network, not a provider. RIS observes 18 IPv4 prefixes totalling roughly 29,000 addresses and no IPv6, announced through just 2 observed neighbours. Two upstreams and no peering fabric is the classic shape of a company that buys transit for its own offices and applications; a network that carried other people's traffic would show peers in the hundreds.

Every announced prefix sits inside 170.171.0.0/16 and every one that resolves in ARIN comes back to Random House itself, under a single RANDOM2 network handle. There are no third-party registrants and no space borrowed from an upstream, so the routed inventory and the legal holder are the same entity throughout — worth checking in this AS range, where scattered inventories often belong to someone other than the named holder.

The space carries what a large publisher runs in-house: corporate connectivity for editorial, sales and distribution sites, plus the public-facing systems a trade publisher operates for retailers and authors.

Notable

The block is heavily deaggregated — seven separate /20s from the same /16, plus /21s, /22s, /23s and /24s carved out of them. That much fragmentation from one contiguous /16 on two upstreams generally reflects site-by-site internal allocation accumulated over decades rather than any routing strategy.