AS680 — DFN Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.

AS680 announces 372 IPv4 prefixes covering 7,676,160 addresses and 141 IPv6 prefixes.

About this network

The Deutsches Forschungsnetz (DFN), Germany's national research and education network, run by the Verein zur Förderung eines Deutschen Forschungsnetzes e.V.

What it's used for

• Connecting German universities and research institutions to a shared national research network (an NREN).

Notable

• A research / education network serving institutions, not a commercial ISP.
• Holds a very large legacy IPv4 footprint reflecting its role connecting the German research community.
• The low AS number reflects an allocation from the internet's earliest years.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 45.12.192.0/22
• 84.246.64.0/21
• 87.77.0.0/16
• 128.7.0.0/16
• 128.140.208.0/21
• 128.176.0.0/16
• 129.26.0.0/16
• 129.70.0.0/16
• 129.217.0.0/16
• 129.233.128.0/19
• 129.233.160.0/23
• 129.233.162.0/24
• 129.233.164.0/22
• 129.233.168.0/22
• 129.233.173.0/24
• 129.233.174.0/23
• 129.233.176.0/20
• 129.233.202.0/24
• 129.233.210.0/24
• 129.233.224.0/20
• 129.247.0.0/16
• 130.73.0.0/16
• 130.75.0.0/16
• 130.133.0.0/16
• 130.149.0.0/16
• 130.183.0.0/16
• 131.173.0.0/16
• 131.188.0.0/16
• 131.220.0.0/16
• 131.234.0.0/16
• 132.176.0.0/16
• 132.180.0.0/16
• 132.187.0.0/16
• 132.195.0.0/16
• 132.199.0.0/16
• 132.231.0.0/16
• 132.252.0.0/16
• 134.1.0.0/16
• 134.28.0.0/16
• 134.30.0.0/16
• 134.91.0.0/16
• 134.94.0.0/16
• 134.96.0.0/16
• 134.99.0.0/16
• 134.100.0.0/16
• 134.102.0.0/16
• 134.104.0.0/16
• 134.106.0.0/16
• 134.107.0.0/17
• 134.107.128.0/18
• 134.107.192.0/21
• 134.107.200.0/23
• 134.107.203.0/24
• 134.107.204.0/22
• 134.107.208.0/24
• 134.107.210.0/23
• 134.107.212.0/22
• 134.107.218.0/23
• 134.107.220.0/22
• 134.107.224.0/24
• 134.107.228.0/22
• 134.107.232.0/21
• 134.107.240.0/20
• 134.109.0.0/16
• 134.110.0.0/16
• 134.169.0.0/16
• 134.176.0.0/16
• 134.245.0.0/16
• 136.156.96.0/19
• 136.172.0.0/16
• 137.193.0.0/16
• 137.248.0.0/16
• 137.250.0.0/16
• 139.6.0.0/16
• 139.11.0.0/16
• 139.13.0.0/16
• 139.17.0.0/16
• 139.18.0.0/15
• 139.20.0.0/16
• 139.30.0.0/16
• 139.75.0.0/16
• 139.174.0.0/16
• 139.191.184.0/21
• 141.4.0.0/16
• 141.5.0.0/18
• 141.5.64.0/19
• 141.5.128.0/17
• 141.9.0.0/16
• 141.13.0.0/16
• 141.14.0.0/16
• 141.20.0.0/16
• 141.22.0.0/15
• 141.24.0.0/15
• 141.27.0.0/16
• 141.30.0.0/16
• 141.32.0.0/15
• 141.35.0.0/16
• 141.39.0.0/17
• 141.39.128.0/18
• 141.39.192.0/20

and 413 more.

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS1299 Arelion Sweden AB
• AS20965 GEANT Vereniging
• AS9002 RETN Limited
• AS34549 meerfarbig GmbH & Co. KG
• AS42708 Glesys Sweden AB
• AS37721 Virtual Technologies & Solutions
• AS34019 Hivane Association
• AS24482 SG.GS
• AS50300 CustodianDC Limited
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS48185 team.blue NV
• AS3320 Deutsche Telekom AG
• AS8434 Telenor Sverige AB
• AS3216 PJSC "Vimpelcom"
• AS3303 Swisscom (Schweiz) AG
• AS12552 GlobalConnect AB
• AS33891 Core-Backbone GmbH
• AS50673 Serverius Holding B.V.
• AS34927 iFog GmbH
• AS4657 StarHub Ltd
• AS37100 SEACOM Limited
• AS48362 Stadtwerke Feldkirch

Downstream networks

• AS553 Universitaet Stuttgart
• AS200943 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
• AS47610 RWTH Aachen University
• AS5501 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
• AS12816 Leibniz-Rechenzentrum
• AS60824 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
• AS49234 Bundesministerium des Innern und fuer Heimat
• AS5520 Universitaet zu Koeln
• AS1754 Deutsches Elektronen-Synchrotron DESY
• AS43066 Information und Technik Nordrhein-Westfalen
• AS29484 Ruhr-Universitaet Bochum
• AS56357 Technical University of Munich
• AS199578 Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-Landau
• AS31705 Europaischen Organisation fuer die Nutzung Meteorologischen Satelliten (Eumetsat)
• AS34878 Karlsruhe Institute of Technology
• AS205046 FZI Forschungszentrum Informatik
• AS2117 Southern Observatory
• AS41289 Deutscher Wetterdienst
• AS207592 Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH, Goettingen
• AS210482 Max-Delbrueck-Centrum fuer Molekulare Medizin in der Helmholtz-Gemeinschaft
• AS34520 Deutsche Forschungsgemeinschaft e.V.
• AS41969 Rundfunk Berlin-Brandenburg RBB
• AS20588 Forschungsverbund Berlin e.V.
• AS8519 European Space Agency (ESA)
• AS12643 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS20965 GEANT Vereniging
• AS1299 Arelion Sweden AB
• AS34549 meerfarbig GmbH & Co. KG
• AS9002 RETN Limited
• AS553 Universitaet Stuttgart
• AS200943 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
• AS47610 RWTH Aachen University
• AS5501 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
• AS12816 Leibniz-Rechenzentrum
• AS48185 team.blue NV
• AS60824 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
• AS50673 Serverius Holding B.V.
• AS4657 StarHub Ltd
• AS49234 Bundesministerium des Innern und fuer Heimat
• AS50300 CustodianDC Limited
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS42708 Glesys Sweden AB
• AS34019 Hivane Association
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions
• AS3320 Deutsche Telekom AG
• AS37100 SEACOM Limited

Routing security

• RPKI: 277 valid, 0 invalid and 48 not-found announcements; 291 ROAs.
• ASPA: 6 authorised providers.
• IRR: 100% of announcements registered; 520 route objects.
• Listed in as-sets: AS-ECIX-DUS, AS-FINECOM-PEERS-DECIX, AS-GBLXEU, AS-MYRASEC, AS-RIS-RRC12, AS-TITANDECIX, AS204464:AS-BLACKLIST, AS20647:AS-PEERS, AS25091:AS-PEERS, AS3303:AS-SWCMPEERS, AS43252:AS-DECIX-HAM-CONNECTED, AS43252:AS-DECIX-HAM-RS, AS43252:AS-DECIX-HAM-RS-V6, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6, AS6777:AS-AMS-IX-RS, AS6777:AS-AMS-IX-RS-V6, AS680:AS-DFNTOWINISP, AS8218:AS-PEERS.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• AMS-IX Amsterdam — Amsterdam, Netherlands
• The Frys Internet Exchange — Frysian, Netherlands
• DE-CIX Hamburg — Hamburg, Germany
• Berlin Commercial Internet Exchange — Berlin, Germany
• Megaport Dusseldorf IX — Düsseldorf, Germany