AS2603 NORDUNET NORDUnet

NORDUNET NORDUnet · registered in Denmark

IPv4 addresses9,7289 prefixes · <0.001% of announced IPv4

Rank in Denmark#44largest network in DK by IPv4 space, of 327 · 0.09% of DK

Rank worldwide#9,194of 79,396 networks with IPv4

IPv67 x /32 (524,224 x /48)13 prefixes

CountryDenmark344 ASNs registered there

Open AS2603 in ASN lookup Look up an IP in this network (109.105.96.1) All networks in Denmark

IPv4 prefixes

All 9 prefixes, in address order.

109.105.96.0/20
109.105.112.0/21
109.105.120.0/22
185.174.116.0/22
192.36.171.0/24
193.10.252.0/24
193.10.254.0/23
193.11.3.0/24
194.68.13.0/24

IPv6 prefixes

All 13 prefixes.

2001:948::/42
2001:948:80::/41
2001:948:100::/40
2001:948:200::/39
2001:948:400::/38
2001:948:800::/37
2001:948:1000::/36
2001:948:2000::/35
2001:948:4000::/34
2001:948:8000::/33
2001:949::/32
2001:94a::/31
2001:94c::/30

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ASNNameIPv4 addresses

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AS12483#46 DanskeBank-AS Den Danske Bank A/S9,472

AS204141#47 K-NET K-Net Forening9,216

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