Autonomous system
AS12374 LFNET-AS01
Unclassified RIPE
Summary
LF.net Netzwerksysteme
isp hosting business legacy
A German provider selling business connectivity and hosting.
What it's used for
- Business access and hosted services. 34,048 addresses across six prefixes, one IPv6
/32, six observed BGP neighbours.
Notable
- Four of the six prefixes are
/19s, each with its own dated netname:DE-LFNET-990409,DE-LFNET-19990722,DE-LFNET-20010716andDE-LFNET-20050308, withDE-LFNET-20170815on a later/22. - The first two are three months apart and written differently. One uses a two-digit year and the other four, in the same registry, for the same holder, in the same year.
- The sixth block,
192.188.136.0/24, carries an unrelated netname,XOF-NET.
Interesting
- Those two 1999 netnames settle something. RIPE's date-stamped netnames are useful for dating parts of a network, and it is tempting to read the two-digit and four-digit forms as an era each — before and after some cutover. This holder used both inside four months, which means the form follows whoever filed the request rather than when it was filed. Date the block from the digits, not from the style.
- A
/19is 8,192 addresses, and getting four of them between 1999 and 2005 was a matter of demonstrating need to a registry that was already rationing. The/22from 2017 is what the same company could get once the free pool was gone: a sixteenth as much, eighteen years later.
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
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Stuttgarter Internet Exchange | Stuttgart, Germany | 193.138.31.6 |
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 6 prefixes · 34.05K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 7 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12374- Registry name
- LFNET-AS01
- Registrant
- LFNET-MNT
- Abuse contact
- abuse@lf.net
- Registered
- 2002-09-05
- Last changed
- 2018-03-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 8 with no ROA
- ROAs
- 0 authorising AS12374
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 138 naming AS12374
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