asn.dev

Autonomous system

AS31371 WISSENSCHAFTSLADEN-AS Germany

Unclassified RIPE

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Wissenschaftsladen Dortmund

Germany · AI-generated

nonprofit research germany small

WISSENSCHAFTSLADEN-AS is operated by Wissenschaftsladen Dortmund e.V..

What it's used for

  • The address space is registered under the netname FREE-DE2-NET with registrants including XS4FREE Administration and Wissenschaftsladen Dortmund e.V.
  • The AS announces 1024 IPv4 addresses and 1 IPv6 prefix, with only 3 observed neighbours, indicating a small-scale internal or research network rather than a transit or large access provider.

Notable

  • The registrants for the announced prefix include both the operator and XS4FREE, suggesting a historical or administrative link to the XS4FREE infrastructure.
  • The inventory consists of a single IPv4 block (91.204.4.0/22) and one IPv6 prefix (2001:678:98c::/48), representing a compact, self-contained address estate.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS50629LWLcom GmbH266

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 1.02K addresses IPv6 1 prefixes

CountryNamePrefixes
DEGermany2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS31371
Registry name
WISSENSCHAFTSLADEN-AS
Registrant
FAUL-MNT
Abuse contact
abuse@xs4free.net
Registered
2004-04-27
Last changed
2025-09-03
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 5 with no ROA
ROAs
0 authorising AS31371
ASPA
no ASPA record
IRR
100% registered · 5 of 5 announcements
Route objects
6 naming AS31371

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 1,778 prefixes, as published 2026-10-20. 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

Cross-check