Autonomous system
AS16107 COMMERZBANK
Unclassified RIPE
Summary
Commerzbank
finance enterprise business
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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 1.02K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS16107- Registry name
- COMMERZBANK
- Registrant
- COMMERZBANK-MNT
- Abuse contact
- abuse@commerzbank.com
- Registered
- 2002-08-08
- Last changed
- 2020-12-04
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 6 with no ROA
- ROAs
- 0 authorising AS16107
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 6 naming AS16107
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 443 networks and 1,784 prefixes, as published 2026-10-19. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere