asn.dev

Autonomous system

AS12643 IGD

Unclassified ARIN

IPv4 addresses 70.14K 5 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Fraunhofer IGD

Germany · AI-generated

education enterprise

A research institute's /16, alongside blocks named for whether they are intranet or explicitly not.

What it's used for

  • Connectivity for a German applied-research institute. 70,144 addresses in five IPv4 prefixes, two IPv6 prefixes, and two observed BGP neighbours.

Notable

  • 146.140.0.0/16 holds 65,536 of the 70,144 addresses, netname IGD.
  • 153.96.244.0/22 is netname FRAUNHOFER-INTRANET-96, registered through Fraunhofer Netzzentrum.
  • 129.233.208.0/23 is Fraunhofer-129-233-NO-Intranet-2.
  • The registry lookup for 192.44.32.0/22 failed, so nothing is known here about that block.
  • The IPv6 announcements are 2001:67c:134::/48 and 2a03:db80:3410::/48.
  • Fifteen sampled addresses were queried and none returned a name.

Interesting

  • One netname says intranet and another says the opposite, in the same organisation's inventory, and both blocks are announced to the global routing table. The word is being used for an internal administrative distinction rather than for reachability, and somebody found it worth recording which side of that line each block falls on. The NO- prefix is the rarer half: naming a thing for what it is not.
  • A /16 is a legacy class B, issued when a research institute could ask for 65,536 addresses and be given them. Two observed neighbours for that much space is the academic pattern — enormous address holdings reached through one or two national research networks.
  • Blocks from 129, 146, 153, 192.44 and 192.67 span four distinct eras of allocation policy, all still in service.

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

2 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS8365Man-da.de GmbH316
AS680Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.60

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

Shape and geography

IPv4 5 prefixes · 70.14K addresses IPv6 2 prefixes

CountryNamePrefixes
DEGermany7

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS12643
Registry name
IGD
Registrant
AS12643-MNT
Abuse contact
noc-services@iosb.fraunhofer.de
Registered
2002-03-13
Last changed
2023-03-28
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
71% valid · 5 valid, 2 with no ROA
ROAs
5 authorising AS12643
ASPA
no ASPA record
IRR
100% registered · 7 of 7 announcements
Route objects
9 naming AS12643

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

Cross-check