AS203740 CAK CAK (ZBO)

CAK CAK (ZBO) · registered in the Netherlands

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Netherlands#661largest network in NL by IPv4 space, of 1,026 · <0.01% of NL

Rank worldwide#46,369of 79,396 networks with IPv4

IPv67 x /32 (458,752 x /48)3 prefixes

CountryNetherlands1,098 ASNs registered there

Open AS203740 in ASN lookup Look up an IP in this network (185.125.40.1) All networks in Netherlands

IPv4 prefixes

All 1 prefix, in address order.

185.125.40.0/23

IPv6 prefixes

All 3 prefixes.

2a06:b7c0::/31
2a06:b7c3::/32
2a06:b7c4::/30

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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