AS9993 CTC-ODC ITOCHU Techno-Solutions Corporation

AS9993 (CTC-ODC) is held by ITOCHU Techno-Solutions Corporation (伊藤忠テクノソリューションズ, CTC), a large listed Japanese systems integrator in the ITOCHU group. The ODC in the handle stands for its outsourcing/data-centre business, and that is what this AS carries: CTC runs its own data centres and sells cloud, hosting and managed outsourcing out of them.

What it's used for

The reverse DNS settles the question. A sampled address in 220.152.120.0/21 resolves under technocuvic.com — TechnoCUVIC being CTC's own hosted/virtual infrastructure service brand — so the space is demonstrably carrying CTC's commercial hosting platform rather than just corporate offices.

The routing shape agrees. RIS sees 9 announced IPv4 prefixes totalling 91,136 addresses, one IPv6 aggregate (2402:1400::/32, a full ISP-sized allocation), and 27 observed BGP neighbours. That neighbour count is the discriminator: far more than the one-or-two upstreams of an enterprise that merely consumes transit, and far fewer than the hundreds a wholesale carrier would show. Two dozen adjacencies is what a data-centre operator builds — several transit providers plus peering at Japanese exchanges, to give hosted customers good paths.

The prefix mix reflects a long history: a legacy 157.113.0.0/16 at the core, plus a scatter of /19s through /22s in 202/203/211/220/27/182 space accumulated over the years.

Notable

• CTC is a publicly traded subsidiary of the ITOCHU trading house, and its IPO capitalisation famously exceeded that of its parent at the time.
• Treat this as an IDC/hosting network. Addresses here belong to CTC's customers' workloads, not to CTC staff.