AS13040 Leibniz-Institut fuer Informationsinfrastruktur GmbH

ASN-FIZ FIZ Karlsruhe - Leibniz-Institut fuer Informationsinfrastruktur GmbH · registered in Germany

IPv4 addresses65,5361 prefixes · 0.002% of announced IPv4

Rank in Germany#110largest network in DE by IPv4 space, of 2,315 · 0.06% of DE

Rank worldwide#3,143of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryGermany2,599 ASNs registered there

Open AS13040 in ASN lookup Look up an IP in this network (141.66.0.1) All networks in Germany

IPv4 prefixes

All 1 prefix, in address order.

141.66.0.0/16

Similar-sized networks in Germany

ASNNameIPv4 addresses

AS12331#107 AUDI-AS Audi AG65,536

AS41700#108 FESTO-AS Festo Management SE65,536

AS210482#109 MDCBLN-AS Max-Delbrueck-Centrum fuer Molekulare Medizin in der Helmholtz-Gemeinschaft65,536

AS34457#111 AMB-Generali Generali Deutschland AG65,536

AS35391#112 HAUNI-AS Koerber Technologies GmbH65,536

AS209499#113 GSI GSI Helmholtzzentrum fur Schwerionenforschung GmbH65,536

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources