AS20574 CSSHOSTING-AS Knowit Connectivity AB

CSSHOSTING-AS Knowit Connectivity AB · registered in Sweden

IPv4 addresses3,5843 prefixes · <0.001% of announced IPv4

Rank in Sweden#191largest network in SE by IPv4 space, of 621 · 0.02% of SE

Rank worldwide#16,938of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountrySweden650 ASNs registered there

Open AS20574 in ASN lookup Look up an IP in this network (178.21.80.1) All networks in Sweden

IPv4 prefixes

All 3 prefixes, in address order.

178.21.80.0/21
185.119.100.0/22
193.108.42.0/23

IPv6 prefixes

All 1 prefix.

2a03:900::/32

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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