Autonomous system
AS13040 ASN-FIZ
Unclassified RIPE
Summary
FIZ Karlsruhe
research education infrastructure
A full /16 announced as a single prefix, held by an institute for scientific information.
What it's used for
- The network of a German research institute for information infrastructure. 65,536 addresses in one IPv4 prefix, two observed BGP neighbours, and no IPv6 announced.
Notable
- The entire inventory is
141.66.0.0/16, netnameFIZLAN. - Two observed BGP neighbours.
- First observed in the routing archive in October 2000.
- Three addresses were sampled and none returned a name.
Interesting
- One announcement covering the whole allocation is unusual once a network passes a few thousand addresses. Most holders this size split their space to steer traffic between upstreams or to separate sites. Announcing the /16 whole says the network is run as one place with one policy.
FIZLANnames the block a local area network, which is what a /16 was expected to be when this space was allocated. Sixty-five thousand addresses on one site was a reasonable planning assumption then and would be an extraordinary one now.- Nothing answered a reverse lookup across the sample. Research institutes tend to publish names for their public services and leave the rest of the range dark, and with only three addresses tested the sample never reached the populated part.
- Two neighbours for a research network is the signature of connecting through a national academic backbone rather than buying commercial transit.
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 2026-10-17, 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 · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 1 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS13040- Registry name
- ASN-FIZ
- Registrant
- FIZ-MNT
- Abuse contact
- netadmin@fiz-karlsruhe.de
- Registered
- 2001-09-26
- Last changed
- 2024-07-03
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 1 authorising AS13040
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 2 naming AS13040
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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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