AS15363 — ASINFOSCORE

AS15363 announces 2 IPv4 prefixes covering 2,304 addresses and 0 IPv6 prefixes.

About this network

The reverse names put the parent group's brand inside the reverse tree itself.

What it's used for

• A credit information company's network. Two IPv4 prefixes announced from Germany, no IPv6, two thousand addresses, through one observed BGP neighbour.

Notable

• Every answering address returns a name of the form 255.bertelsmann.27.101.193.in-addr.arpa: the last octet, then the parent group's brand, then the remaining octets reversed, then the reverse tree's own suffix.
• That is what a delegated reverse zone looks like when the zone name is quoted back as the answer, and the label chosen for the delegation names the group rather than this subsidiary.
• The two netnames are the same word with and without a trailing digit, one per block.
• Both registrant fields list a network administrator role and an abuse role, each ending in the same three letter site code.
• Six addresses were queried for reverse DNS and four returned a name.

Interesting

• A reverse name that ends in the reverse tree's suffix is not a hostname anybody can use. It resolves nothing forward, so any check that compares the two directions fails here.
• The interesting disclosure is corporate rather than technical: the addresses say which group owns the subsidiary, which no other field in the record does.
• Credit scoring firms hold files on people who never chose to be their customers. Two thousand addresses and one upstream is a small visible surface for that.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 193.101.11.0/24
• 193.101.24.0/21

Upstream networks

• AS12480 ILK Internet GmbH Rechnerkommunikation im Internet

Adjacent networks

• AS12480 ILK Internet GmbH Rechnerkommunikation im Internet