AS57521 SIMPLYSOFT-AS Simplysoft GmbH

SIMPLYSOFT-AS Simplysoft GmbH · registered in Switzerland

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in Switzerland#580largest network in CH by IPv4 space, of 741 · <0.01% of CH

Rank worldwide#59,079of 79,396 networks with IPv4

IPv61 x /32 (65,537 x /48)17 prefixes

CountrySwitzerland783 ASNs registered there

Open AS57521 in ASN lookup Look up an IP in this network (45.10.39.1) All networks in Switzerland

IPv4 prefixes

All 1 prefix, in address order.

45.10.39.0/24

IPv6 prefixes

All 17 prefixes.

2a13:bc1::/41
2a13:bc1:80::/42
2a13:bc1:c0::/47
2a13:bc1:c2::/47
2a13:bc1:c4::/46
2a13:bc1:c8::/45
2a13:bc1:d0::/44
2a13:bc1:e0::/43
2a13:bc1:100::/40
2a13:bc1:200::/39
2a13:bc1:400::/38
2a13:bc1:800::/37
2a13:bc1:1000::/36
2a13:bc1:2000::/35
2a13:bc1:4000::/34
2a13:bc1:8000::/33
2a13:bc2::/48

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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