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AS21430 WIA-AS WIA spol. s.r.o.

WIA-AS WIA spol. s.r.o. · registered in Czechia

IPv4 addresses41,21664 prefixes · 0.001% of announced IPv4
Rank in Czechia#23largest network in CZ by IPv4 space, of 570 · 0.50% of CZ
Rank worldwide#4,252of 79,396 networks with IPv4
IPv61 x /32 (65,540 x /48)4 prefixes
CountryCzechia599 ASNs registered there
Open AS21430 in ASN lookup Look up an IP in this network (31.7.240.1) All networks in Czechia

IPv4 prefixes

All 64 prefixes, in address order.

  • 31.7.240.0/21
  • 77.78.64.0/22
  • 77.78.68.0/23
  • 77.78.74.0/23
  • 77.78.80.0/21
  • 77.78.88.0/23
  • 77.78.91.0/24
  • 77.78.92.0/23
  • 77.78.122.0/24
  • 80.250.0.0/19
  • 81.0.196.0/23
  • 81.0.198.0/24
  • 81.0.200.0/22
  • 81.0.204.0/23
  • 81.0.210.0/23
  • 81.0.215.0/24
  • 81.0.216.0/24
  • 81.0.222.0/23
  • 81.0.224.0/24
  • 81.0.227.0/24
  • 81.0.229.0/24
  • 81.0.244.0/23
  • 81.0.251.0/24
  • 81.0.252.0/23
  • 82.208.0.0/22
  • 82.208.13.0/24
  • 82.208.15.0/24
  • 82.208.19.0/24
  • 82.208.24.0/23
  • 82.208.30.0/23
  • 82.208.36.0/23
  • 82.208.38.0/24
  • 82.208.42.0/23
  • 82.208.45.0/24
  • 82.208.51.0/24
  • 82.208.52.0/22
  • 82.208.57.0/24
  • 82.208.59.0/24
  • 83.136.200.0/21
  • 85.209.124.0/23
  • 85.209.126.0/24
  • 85.239.224.0/23
  • 85.239.226.0/24
  • 85.239.228.0/23
  • 85.239.251.0/24
  • 85.239.254.0/23
  • 91.234.162.0/23
  • 109.123.200.0/23
  • 109.123.204.0/24
  • 109.123.212.0/23
  • 109.123.226.0/24
  • 147.161.28.0/22
  • 185.33.136.0/22
  • 185.161.240.0/22
  • 217.11.226.0/24
  • 217.11.231.0/24
  • 217.11.234.0/24
  • 217.11.237.0/24
  • 217.11.238.0/23
  • 217.11.240.0/23
  • 217.11.244.0/24
  • 217.11.250.0/24
  • 217.11.252.0/23
  • 217.11.255.0/24

IPv6 prefixes

All 4 prefixes.

  • 2001:67c:aa4::/48
  • 2001:67c:15a0::/47
  • 2a01:6400::/32
  • 2a14:a480::/48

Similar-sized networks in Czechia

ASNNameIPv4 addresses
AS12570#20 ITSELF O2 Czech Republic, a.s.49,664
AS24806#21 INTERNET-CZ INTERNET CZ, a.s.45,824
AS6740#22 INEXT-CZ-ADA CEZNET s.r.o.41,984
AS25424#24 INEXT-CZ CEZNET s.r.o.33,792
AS39906#25 COPROSYS CoProSys a.s.33,792
AS41046#26 NEJTV-AS O2 Czech Republic, a.s.32,768

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