AS28952 O2BSSK O2 Business Services, a.s

O2BSSK O2 Business Services, a.s · registered in Slovakia

IPv4 addresses43,2649 prefixes · 0.001% of announced IPv4

Rank in Slovakia#7largest network in SK by IPv4 space, of 191 · 1.70% of SK

Rank worldwide#4,156of 79,396 networks with IPv4

IPv68 x /32 (524,544 x /48)2 prefixes

CountrySlovakia196 ASNs registered there

Open AS28952 in ASN lookup Look up an IP in this network (31.3.32.1) All networks in Slovakia

IPv4 prefixes

All 9 prefixes, in address order.

31.3.32.0/19
37.58.0.0/20
37.152.96.0/19
46.34.224.0/19
90.176.0.0/19
91.191.69.0/24
91.191.80.0/22
151.236.224.0/20
185.103.144.0/22

IPv6 prefixes

All 2 prefixes.

2a03:6947:1800::/40
2a06:2c40::/29

Similar-sized networks in Slovakia

ASNNameIPv4 addresses

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AS8257#5 SLOVANET-BROADBAND Slovanet a.s.82,944

AS31117#6 ENERGOTEL-AS ENERGOTEL a.s.53,248

AS29405#8 VNET-AS VNET a.s.35,840

AS30898#9 CRSR-AS DataCentrum33,024

AS35328#10 DSIDATA DSI DATA, a. s.24,576

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