Autonomous system
AS16365 COMMERZBANK DE-60261 Frankfurt
Unclassified RIPE
Summary
Commerzbank
finance enterprise business
Five of seven blocks are held by an investment bank that no longer exists under its own name.
What it's used for
- A bank's network. Fifteen prefixes announced from Germany, eight of them IPv6, twenty-one thousand five hundred and four addresses, through three observed BGP neighbours.
Notable
- The AS handle is the bank's name, a country code, a postcode and a city, so the routing label doubles as a postal address.
- Two blocks carry the bank's own netnames, one with a country code and a full date, one with neither, and both list four contacts: an administrative role, a technical role, the company under its full legal form, and an abuse role.
- The other five share a netname made of the bank's name and three letters for a city. They are registered to a hostmaster whose label is four initials belonging to a different institution.
- That acquired institution's abbreviation appears nowhere else in the record. Only the abuse role, named after the current owner, ties those five blocks back to the holder.
- Eighteen addresses were queried for reverse DNS and none returned a name.
Interesting
- A bank with twenty thousand addresses and nothing at all in reverse DNS has made a choice. Every address here points inward, and none of it is meant to be resolved by a stranger.
- Five blocks named after a foreign office and held under an acquired brand is the network shape of a merger. The addresses moved, the routing moved, and the registry entry stayed where it was.
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 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 21.50K addresses IPv6 8 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 15 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS16365- Registry name
- COMMERZBANK
- Registrant
- COMMERZBANK-MNT
- Abuse contact
- abuse@commerzbank.com
- Registered
- 1970-01-01
- Last changed
- 2023-11-13
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 78% valid · 7 valid, 2 with no ROA
- ROAs
- 10 authorising AS16365
- ASPA
- no ASPA record
- IRR
- 100% registered · 9 of 9 announcements
- Route objects
- 17 naming AS16365
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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