AS16107 — COMMERZBANK

AS16107 announces 1 IPv4 prefixes covering 1,024 addresses and 1 IPv6 prefixes.

About this network

The hostmaster contact still carries the initials of the investment bank this one absorbed.

What it's used for

• A bank's network. One IPv4 prefix and one IPv6 block announced from Germany, one thousand and twenty-four addresses, through three observed BGP neighbours.

Notable

• The AS handle, the holder name and the netname are all the same word, with only the legal form varying between them, which is as consistent as these records get.
• The first contact on the block is a hostmaster role named with four initials that belong to a different bank entirely, one that was folded into this one.
• The bank's own name follows it, and then a role for abuse, so the record reads as three generations of ownership stacked in one field.
• The IPv6 block comes from the registry's own range rather than from an upstream, and is announced alongside a modest IPv4 holding.
• Three addresses were queried for reverse DNS and none returned a name.

Interesting

• Merged banks keep the acquired institution's technical contacts for years because those are the people who actually know the network. The registry field is a fossil of that: the role outlives the brand, and nobody renames it because renaming it breaks the mailbox.
• A thousand addresses is small for an institution of this size. Retail banking mostly happens behind someone else's front door now, and the bank's own announced space is the part it cannot outsource.

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

Announced prefixes

• 193.41.132.0/22
• 2001:67c:2440::/48

Upstream networks

• AS34309 Link11 GmbH
• AS8220 COLT Technology Services Group Limited
• AS20676 Plusnet GmbH

Adjacent networks

• AS34309 Link11 GmbH
• AS8220 COLT Technology Services Group Limited
• AS20676 Plusnet GmbH