AS7677 DNP Dai Nippon Printing Co., Ltd

DNP is Dai Nippon Printing Co., Ltd., one of the world's largest printing companies and, in practice, a diversified Japanese manufacturer — packaging, display components, smart cards and IT services alongside the printing business.

What it's used for

• About 13,600 addresses across seventeen prefixes, chiefly 157.101.224.0/19 and 210.133.96.0/20. No IPv6 is announced.
• Reverse DNS splits two ways. Most of it is the company's own infrastructure in dnp.co.jp and dnp.ad.jp, including hosts under kdc.dnp.ad.jp — the Kashiwa data centre. The rest sits in mediagalaxy.ne.jp, the brand DNP has used for managed hosting and cloud since 1998, with machine-numbered names of the hNNNNNNNNNNNN.mediagalaxy.ne.jp form.

Notable

• Primarily an enterprise network — a large manufacturer's corporate IT — with a genuine managed-hosting business attached. Neither half is subscriber space; there are no dial-up, PPPoE or DHCP-style pools anywhere in it.
• A minority of prefixes reverse into customer-facing service domains, which is what you would expect from hosted web properties rather than from an access ISP.

Interesting

• The MediaGalaxy platform is PCI DSS certified for card-payment workloads, which is an unusual thing to find behind a printing company's AS — and a reminder that Japanese insatsu firms moved into secure data and IT services decades ago.